Non multi-modal endpoint trigger not multi-modal endpoint error...

This error happened after a SDK update. I'm only sending an image into a Sagemaker endpoint, as expected.

{"ErrorCode":"TARGET_MODEL_HEADER_NOT_SUPPORTED","Message":"Endpoint wireframe2code is not a multi-model endpoint and do (truncated...) ValidationError (client): Endpoint wireframe2code is not a multi-model endpoint and does not support target model header.

Start by locating the notebook or example that deploys or invokes the wireframe2code SageMaker endpoint and reproduce the reported ValidationError with the current SDK. Compare the endpoint configuration and request behavior before and after the SDK update; done should be a confirmed cause and a tested correction or compatibility note, but the report names no file or test.

Written by the indexing model from the issue text.