Editing Dataflow error code "status code: 400"

I have a dataset that will not refresh:

Data source errorUnknown exception. The exception was raised by the IDbCommand interface. Table: all-all-sp-pvp-all

So I then open the dataset on Power Bi Desktop and try to refresh, but get an error that all-all-sp-pvp-all is blocking the refresh of all quiries. So I open power query and see that in all-all-sp-pvp-all  I see this error

ModelNotFoundException: Unknown exception
Details:
Error=Unknown exception

So I go back to the service and try to edit the dataflow that has the table  all-all-sp-pvp-all , but I get this 

I have tried updating my credentials, but that has not helped.  If I refresh it, I do not get any error, it seems fine, but the following dataset cannot seem to read it. How do I troubleshoot this, if I cannot get into it?