add more logging to 500 errors #4244

Job	Run time
build-and-check	3m 13s
test-backend	1m 0s
test-packages/billing	57s
test-.agents	54s
test-npm-app	1m 5s
test-packages/internal	57s
test-web	55s
test-common	55s
test-integration-.agents	51s
test-integration-backend	58s
test-packages/agent-runtime	1m 56s
test-integration-packages/agent-runtime	1m 3s
test-integration-packages/internal	55s
test-integration-npm-app	1m 2s
test-integration-packages/billing	1m 16s
test-integration-cli	1m 0s
test-integration-web	1m 0s
test-cli	1m 18s
test-integration-common	56s
	22m 11s

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