The object reference is not defined to an instance of an object

[JunoStation]

Hi,

I'm importing data from Big Query. I'm trying to duplicate my table "exp_offres" in order to manipulate JSON data without modifying the current version of my table, as my JSON will create many rows once expanded.

However, if I try to duplicate it from the "Transform data" menu, or if I try to import it once again from the "Import data" menu, I always have the following error :

The object reference is not defined to an instance of an object.

I do not apply any modificaiton to the duplicated table, I only try to duplicate it and save, but I still have the error. Does anyone know why please?

Thanks!

[JunoStation · Accepted solution]

For some reasons, after restarting PowerBI a few times, it is now working. I did not change anything though.