Microsoft.Mashup.Engine1.Library.Resources.HttpResource: Request failed

[lionx]

I have published an AL extension with an API page to Busines Central. It works well for the first time and also gets data to Power BI. But for the last time, it comes front with the error:

DataSource.Error: The OData connector failed with the following error: Microsoft.Mashup.Engine1.Library.Resources.HttpResource: Request failed: 
OData Version: 4, Error: The remote server returned an error: (500) Internal Server Error. (purchaseLinesPBI cannot publish purchaseLinesPBI because a different entity with the same name has already been added.)
OData Version: 3, Error: The remote server returned an error: (500) Internal Server Error. (purchaseLinesPBI cannot publish purchaseLinesPBI because a different entity with the same name has already been added.).

Any idea to fix this? Many thanks.