improve error message in the agent plugin (#6114) #5796

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	4m 54s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 32s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	5m 50s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 9s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	6m 23s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 43s
Dry Run Goreleaser	1m 14s
Test Getting started	14m 12s
Lint (datacatalog) / Run Lint	2m 39s
Lint (flyteadmin) / Run Lint	3m 19s
Lint (flytecopilot) / Run Lint	2m 20s
Lint (flytectl) / Run Lint	3m 0s
Lint (flyteidl) / Run Lint	2m 5s
Lint (flyteplugins) / Run Lint	3m 15s
Lint (flytepropeller) / Run Lint	3m 10s
Lint (flytestdlib) / Run Lint	2m 41s
Check Go Generate (datacatalog) / Go Generate	1m 45s
Check Go Generate (flytecopilot) / Go Generate	1m 35s
Check Go Generate (flyteadmin) / Go Generate	2m 20s
Check Go Generate (flytectl) / Go Generate	2m 14s
Check Go Generate (flytepropeller) / Go Generate	2m 28s
Unit Tests (datacatalog) / Run Unit Test	3m 4s
Unit Tests (flyteadmin) / Run Unit Test	4m 41s
Unit Tests (flytecopilot) / Run Unit Test	2m 44s
Unit Tests (flytectl) / Run Unit Test	3m 48s
Unit Tests (flytepropeller) / Run Unit Test	4m 22s
Unit Tests (flyteplugins) / Run Unit Test	4m 12s
Unit Tests (flytestdlib) / Run Unit Test	3m 41s
Integration Test (flyteadmin) / Integration tests	6m 9s
	1h 52m 30s

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