NoSuchMethodError: DefaultModelValidator: method 'void <init>()' not found

This error occurs when there is a mismatch between the version of a library and the version of its dependencies. In this case, it seems like the method "<init>()" is missing in the DefaultModelValidator class.

To fix this error, you can try the following steps:

1. Check if you are using the correct version of the library. If not, try upgrading or downgrading the library to match its dependencies.

2. Check if there are any conflicting dependencies in your project. You can try excluding the conflicting dependencies from your build.gradle file.

3. Clean and rebuild your project to ensure that all the dependencies are synced and updated.

4. If the issue still persists, try removing the library and adding it again from scratch.

If none of these steps work, you may need to seek further help from the library's documentation or support team.