Hi Nestor Marquez!
As far as I remember, if you didn't change anything in the CLI-generated project, you just need to run the app even if the IDE tells you there are errors. For example in VSCode, I have to click on the "Debug anyway" button.
From time to time, when I add new strings or if I close and re-open the IDE, it tells me that there are errors again, but I can run the app anyway and after I run it the errors disappear.