Fix WordPress Theme Installation Errors

I run my site on WordPress and every attempt to install a new theme ends in an error that blocks the process entirely. This broken functionality is the only thing standing between me and launching the refreshed design, so I need it diagnosed and fixed quickly.

Here’s what you’ll need to do:
• Trace and remove whatever is triggering the installation error—whether it’s leftover code, a PHP setting, or a plugin conflict.
• Complete the theme install and verify that the front-end, Customizer and bundled plugins load without warnings.
• Hand over a brief summary of the root cause and the steps you took so I can replicate the fix on staging in the future.

Full wp-admin and hosting access will be ready as soon as we begin, and I’d appreciate a swift turnaround.