Update index.md

Author: Andrew Brookins

docs/index.md

@@ -27,3 +27,7 @@ Read how to get the RediSearch and RedisJSON modules at [redis_modules.md](redis
 ## FastAPI Integration
 
 Redis OM is designed to integrate with the FastAPI web framework. See how this works at [fastapi_integration.md](fastapi_integration.md).
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+## Error Messages
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+Get help with (some of) the error messages you might see from Redis OM: [errors.md](errors.md)