failed to run test query: list entries: timeout

When testing the datasource I get the following error:
failed to run test query: list entries: timeout

I have had similar problem also when connecting via python, and found I could use the the following switch to disable grpc:
#logging_client = logging.Client(project=project_id**, _use_grpc=0**)

Is there a way to disable grpc in the plugin?

My query works just fine since when I click on the View in Cloud Logging button I can see my data. This is just the connection method.