This problem happens when trying to build your own library and trying to publish it into maven repository, so that this library can be included in other applications as a dependency/plugin
This exact problem is probably related to this topic on Stack Overflow
How to fix Plugin with id 'com.github.dcendents.android-maven' not found. in android studio

and this error is probably caused by lines in gradle files like these

apply plugin: 'com.github.dcendents.android-maven'

plugins {
  id "com.github.dcendents.android-maven" version "2.1"
}
    
dependencies{
    classpath 'com.github.dcendents:android-maven-plugin:1.2'
}

So the solution might be to comment/delete lines like above and rebuild/resync project with gradle files. At least error notification should be gone

this plugin com.github.dcendents.android-maven is based on this github repository
https://github.com/dcendents/android-maven-gradle-plugin
This is much likely an abandoware as written in this repository's readme
Alternatively you can try using different android build plugin like mentioned in above repository's readme
https://developer.android.com/studio/build/maven-publish-plugin