Fix Python agent read when an error is raised #2587

Job	Run time
CLI End to End tests	10m 9s
Unit tests (Runtime)	6m 45s
End to End tests (Python, python)	20m 40s
Unit tests (Runtime IT)	20m 14s
End to End tests (Other, other)	19m 14s
Unit tests (Deployer)	8m 17s
Unit tests (Api Gateway)	4m 40s
Unit tests (Control plane)	4m 27s
Unit tests (Other)	11m 44s
Unit tests (Style)	4m 12s
	1h 50m 22s

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