I get an error when trying to run my flutter app

[Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-sdk-api-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-impl-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] play-services-measurement-base-17.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. [Fatal Error] firebase-iid-19.0.0.pom:2:1: Content is not allowed in prolog. FAILURE: Build failed with an exception. What went wrong: Could not determine the dependencies of task ':firebase_admob:generateDebugRFile'. > Could not resolve all task dependencies for configuration ':firebase_admob:debugCompileClasspath'. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. Required by: project :firebase_admob > com.google.android.gms:play-services-ads-lite:18.1.1 project :firebase_admob > com.google.android.gms:play-services-measurement-api:17.0.0 project :firebase_admob > com.google.android.gms:play-services-measurement-sdk:17.0.0 > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-sdk-api:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. Required by: project :firebase_admob > com.google.android.gms:play-services-measurement:17.0.0 project :firebase_admob > com.google.android.gms:play-services-measurement-api:17.0.0 project :firebase_admob > com.google.android.gms:play-services-measurement-sdk:17.0.0 > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-base:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. Required by: project :firebase_admob > com.google.android.gms:play-services-measurement:17.0.0 project :firebase_admob > com.google.android.gms:play-services-measurement-api:17.0.0 project :firebase_admob > com.google.android.gms:play-services-measurement-sdk:17.0.0 > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.android.gms:play-services-measurement-impl:17.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/androi… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. Required by: project :firebase_admob > com.google.android.gms:play-services-measurement-api:17.0.0 > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. > Could not resolve com.google.firebase:firebase-iid:19.0.0. > Could not parse POM dl.google.com/dl/android/maven2/com/google/fireba… > Content is not allowed in prolog. Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. * Get more help at help.gradle.org BUILD FAILED in 41s Exception: Gradle task assembleDebug failed with exit code 1 Exited (sigterm) Can anyone help me out on this. I have been on it for days now, with not a single progress. I need y'all help. Just assist me in working this out and I will be forever grateful. I need all the help I can get. Can anyone help me out on this. I have been on it for days now, with not a single progress. I need y'all help. Just assist me in working this out and I will be forever grateful. I need all the help I can get. Can anyone help me out on this. I have been on it for days now, with not a single progress. I need y'all help. Just assist me in working this out and I will be forever grateful. I need all the help I can get.