[Bug]: Error desc not specifying what went wrong about openapi-core

[itsMGA]

So i pinpointed the problem, my request uses basic auth, i was encoding user/pass with base64 which caused the above problem, still the error is really not as expected

[p1c2u]

Hi @itsMGA

thanks for the report. Please provide working example with full traceback.

[grinspins]

I found you have to dig a little deeper into the exceptions to get the exact problem. OpenApiError has a __cause__ attribute that points to the InvalidSchemaValue that's raised by the validator. InvalidSchemaValue has a schema_errors attribute, which is a list of jsonschema ValidationErrors. They contain the exact error message via ValidationError.message and if it's a nested field, the .path to the bad field. Looks like path parameter names can be retrieved from OpenApiError.name instead.
Hope that helps someone.