fix: properly handle errors when posting CSR's #430

Job	Run time
unit-test-frontend / nextjs-unit-tests	24s
build-nextjs / nextjs-build	45s
build-gocert / go-build	13s
go-lint / lint	14s
unit-test-gocert / go-unit-tests	22s
go-vet / go-vet	19s
rock-build / build-rock	7m 33s
publish	0s
rock-scan	0s
	9m 50s

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