Unity Google Play Services Duplicate Class Error

Fix Unity Android duplicate class errors caused by Google Play Services dependency conflicts.

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Fast checklist

  1. Search the Gradle log for Duplicate class.
  2. Identify which AAR/JAR files contain the repeated class.
  3. Check Firebase, AdMob, OneSignal, ARCore, and Play Services versions.
  4. Remove old SDK folders before importing new versions.
  5. Re-run dependency resolution if using EDM4U.

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