Unable to Open Semantic Model

Hello Everyone!

I recently deployed a semantic model on Fabric using Tabular Editor, with the connection to an on-prem SQL database in Import Mode.

While I am able to refresh the model and create reports, I encounter the following error when trying to open the data model:

Underlying Error: {"code":"ExternalServiceFailed","pbi.error":{"code":"ExternalServiceFailed","parameters":{},"details":[{"code":"ModelingServiceError_Reason","detail":{"type":1,"value":"Error in ModelingEngineHost"}},{"code":"ModelingServiceError_Location","detail":{"type":1,"value":"ModelingEngineHost"}},{"code":"ModelingServiceError_ExceptionType","detail":{"type":1,"value":"InvalidOperationException"}},{"code":"ModelingServiceError_Message","detail":{"type":1,"value":"Sequence contains more than one element"}}]}}

Does anyone know the cause of this issue?

Thanks in advance!