I am using the Mantra theme for a client.  The portfolio page will not upload images.

See loom video https://www.loom.com/share/e22d9c5f41674b989993c04615bba2b4

and attached console error message which references max_file_uploads

This theme no longer available for purchase on ThemeForest.

I found this on StackOverflow: https://stackoverflow.com/questions/29716171/uncaught-error-syntax-error-unrecognized-expression-object-htmldivelement

Thanks for your help.

Bill Kellaway