I got error plugin killed by signal 9 when execute this plugin. Kindly help with this issue :) How to reproduce: `protoc wartek/core/event/nlp_job_update/v1/event.proto --pubsub-schema_out=OUT_DIR --pubsub-schema_opt=message-encoding=json` ``` --pubsub-schema_out: protoc-gen-pubsub-schema: Plugin killed by signal 9. ```