Troubleshooting

Common Issues

Error	Cause	Solution
Multiple precompiled assemblies... Newtonsoft.Json.dll	Duplicate DLL	Delete Assets/Plugins/Newtonsoft.Json.dll
uses-sdk:minSdkVersion xx cannot be smaller than version yy declared in library ….	API level too low	Set Min API Level ≥ 26 in Player Settings
Execution failed for task ':launcher:processReleaseResources	Android resource linking failed due to Outdated Android SDK	Update to API Level 31+
Invalid signing key error	Might happen if you have Android SDK already installed	Create custom signing key and use it to sign the app

Debugging Tips

• Always check Unity Console logs.

• Use unique orderId for each transaction.

• Verify API credentials in CodaConfig.