If you are here it means that you are facing a frustrating exception regarding Android licenses in Flutter.
More specifically the exception occurs when you try to run the following command:
$ flutter doctor --android-licenses
and the output is something like this:
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
at com.android.repository.api.SchemaModule$SchemaModuleVersion.<init>(SchemaModule.java:156)
at com.android.repository.api.SchemaModule.<init>(SchemaModule.java:75)
at com.android.sdklib.repository.AndroidSdkHandler.<clinit>(AndroidSdkHandler.java:81)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 5 more
The easiest fix I found is to install the Android SDK Command-line Tools.
In Android Studio open
File > Settings > Appearance & Behavior > System Settings > Android SDK > SDK Tools

then tick the corresponding element, install and restart Android Studio and everything shoul work like a charm.
Happy coding!

Thanks, This fixed the erro
Happy to help 🙂