Migration not working

Migration does not work. Trying to migrate galleries from NextGen Plus to FooGallery. When start the migration process, I get this error:
“Something went wrong with the migration and the page will now reload. Once it has reloaded, click “Resume Migration” to continue with the migration.”
I have read previous posts regarding the matter, and cleared cache, disabled all plugins (except Foogallery, Foo Migration and NextGen plugin), tried migrating galleries one by one and also changing to the WordPress Twenty Twenty Five theme. No fix, with same error. The other post seems to have been miraculously “resolved”, although there was no solution listed and I suspect support may have designated it resolved when the author did not continue with the request.

I would appreciate any solution, as I suspect I am not the only user with this problem (same error as previous user and solutions via support did not work).

• This topic was modified 6 months ago by 01labs. Reason: Included additional tried solution