## Compiling*[Protoc plugin fails in maven build](Protoc-Plugin-Fails-When-Build.md)*[Required items could not be found, when import project into Eclipse](Import-Project-Eclipse-RequireItems-Exception.md)## Runtime*[Why only traces in UI?](Why-have-traces-no-others.md)*[Too many GRPC logs in the console](Too-many-gRPC-logs.md)*[The trace doesn't continue in kafka consumer side](kafka-plugin.md)*[Agent or collector version upgrade](Upgrade.md)
*[EnhanceRequireObjectCache class cast exception](EnhanceRequireObjectCache-Cast-Exception.md)*[ElasticSearch server performance FAQ, including ERROR CODE:429](ES-Server-FAQ.md)
*["FORBIDDEN/12/index read-only / allow delete (api)" appears in the log](https://discuss.elastic.co/t/forbidden-12-index-read-only-allow-delete-api/110282)