PenciDesign replied
Hi,
Strange, Have you try deactivate all plugins ( except plugins come from the theme ) and try it again?
If it work, let's enable each plugin to check what's plugin caused this issue.
If it still doesn't work, let's try increase the memory limit from the hosting for your site:
https://www.wpbeginner.com/wp-tutorials/fix-wordpress-memory-exhausted-error-increase-php-memory/
Hope this help,
Best Regards,
PenciDesign