Validation error on update of lambda_layer_arn

[aufbakanleitung]

My pipeline is throwing the error that the layer arn isn't correct. But it's filled in according to spec:
lambda_layer_arn: 'arn:aws:lambda:eu-west-1:331730032056:layer:change-detect-layer'

It's also weird that my pipeline claims to be finished without errors despite this failure.

This is the run.
This is the full error:

An error occurred (ValidationException) when calling the UpdateFunctionConfiguration operation: 1 validation error detected: Value '[arn:aws:lambda:eu-west-1:331730032056:layer:change-detect-layer:]' at 'layers' failed to satisfy constraint: Member must satisfy constraint: [Member must have length less than or equal to 140, Member must have length greater than or equal to 1, Member must satisfy regular expression pattern: (arn:[a-zA-Z0-9-]+:lambda:[a-zA-Z0-9-]+:\d{12}:layer:[a-zA-Z0-9-_]+:[0-9]+)|(arn:[a-zA-Z0-9-]+:lambda:::awslayer:[a-zA-Z0-9-_]+)]

ps: it entirely possible that the aws credentials are too limited, but I wouldn't expect this error message from that .