[Mobile] Error getting package in android. A problem occurred configuring project ':url_launcher'

[dsolse]

My issue is about [Mobile]

Hi, I have used the package running the pubspec.yaml in browser with no problems, but if I tried to run the same code in an android device i get the following error. I have seen this issue has been solved, but when I tried to apply those solutions, I got the same error:

Running Gradle task 'assembleDebug'...
[Fatal Error] gradle-3.4.2.pom:2:1: Content is not allowed in prolog.

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':url_launcher'.
> Could not resolve all artifacts for configuration ':url_launcher:classpath'.
   > Could not resolve com.android.tools.build:gradle:3.4.2.
     Required by:
         project :url_launcher
      > Could not resolve com.android.tools.build:gradle:3.4.2.
         > Could not parse POM https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.4.2/gradle-3.4.2.pom
            > Content is not allowed in prolog.
> Could not get unknown property 'android' for project ':url_launcher' of type org.gradle.api.Project.

* 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 https://help.gradle.org

BUILD FAILED in 5s
Exception: Gradle task assembleDebug failed with exit code 1

I am not sure if there is an error in my setup, but I am asking for help here beacause this only happends with this package, so if someone has solutions I am happy to hear them.