BigQuery bq load error- "cannot determine table described"

If you are are getting this error , it is an authentication and authorization issue, simply log out and log in again. e.g if you are using cloud shell – close it and reopen.

Commands like the below will describe your project and data set – but still wont sent the cmd to BQ API:

bq show mydataset.my_test
bq show mydataset 

You can also try adding explicit project id as follows:

projectid:myset.my_test