Fix Python agent read when an error is raised #2593

Job	Run time
CLI End to End tests	9m 16s
Unit tests (Runtime)	6m 26s
End to End tests (Python, python)	20m 45s
Unit tests (Runtime IT)	17m 48s
End to End tests (Other, other)	21m 12s
Unit tests (Deployer)	7m 38s
Unit tests (Api Gateway)	5m 3s
Unit tests (Control plane)	4m 29s
Unit tests (Other)	11m 58s
Unit tests (Style)	4m 21s
	1h 48m 56s

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