---
title: "Discussion on \"Fixing Errors with SPFx Services in Application Customizer During Debugging\" | Hashnode"
description: "Discussion on \"Fixing Errors with SPFx Services in Application Customizer During Debugging\". Before you deploy your application, you usually want to debug or test it. During development, you need to add\n?loadSPFX=true&debugManifestsFile=https%3A%2F%2Flocalhost%3A4321%2Ftemp%2Fmanifests.js\n\nto the URL to test your solution. If you're working ..."
url: "https://hashnode.com/posts/fixing-errors-with-spfx-services-in-application-customizer-during-debugging/660fae640fbf6f62a01b0587"
---

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# [Fixing Errors with SPFx Services in Application Customizer During Debugging](https://spfx-app.dev/fixing-errors-with-spfx-services-in-application-customizer-during-debugging?utm_source=hashnode&utm_medium=feed)

Before you deploy your application, you usually want to debug or test it. During development, you need to add ?loadSPFX=true&debugManifestsFile=https%3A%2F%2Flocalhost%3A4321%2Ftemp%2Fmanifests.js to the URL to test your solution. If you're working ...

Apr 5, 2024 · 2 min read · spfx-app.dev  
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## Written by

[$€®¥09@](https://hashnode.com/@Seryoga)

@Seryoga · Nuremberg, Germany

  
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Software Architect

I am Sergej and I am a Software Architect from Germany (AURUM GmbH). I have been developing on Microsoft technologies for more than 14 years, especially in SharePoint / Microsoft 365. With this blog, I want to share my knowledge with you and also improve my English skills. The posts are not only about SPFx (SharePoint Framework) but also about tips & tricks around the M365 world & developments of all kinds. The posts are about TypeScript, C#, Node.js, Vue.js, Visual Studio/ VS Code, Quasar, PowerShell, and much more. I hope you will find some interesting posts. I would also be happy if you follow me. Greetings from Germany Sergej / $€®¥09@

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