Wordpress login and form submission

Hello,

I have been trying to submit a form going through these steps:

1. goto https://www.boazproject.org/short-term-mission-trips/

2. scroll to the bottom and find "Apply for a mission trip."

3. fill out required fields of the form

4. hit the submit button

5. error message: Upload error: Unknown error

I submitted this problem to my web hosting company, and they have come up with this problem:

Upon reviewing your case, I've identified that the issue stems from the active theme, Betheme. To ensure a thorough investigation without impacting your live site, I created a staging environment:

https://www.staging13.boazproject.org/

In this controlled setting, I activated WordPress debug mode and attempted to submit the form, which resulted in the following errors:

[12-Mar-2026 15:39:02 UTC] PHP Warning: Undefined array key "file" in /home/customer/www/staging13.boazproject.org/public_html/wp-content/themes/betheme/functions/theme-shortcodes.php on line 5268 [12-Mar-2026 15:39:02 UTC] PHP Warning: Trying to access array offset on null in /home/customer/www/staging13.boazproject.org/public_html/wp-content/themes/betheme/functions/theme-shortcodes.php on line 5268

These errors persist even when attempting to edit the form in the WordPress backend. The debug log pinpoints the root cause: warnings are generated by the BeTheme file theme-shortcodes.php due to an assumption that a file upload is present when it is not. Here’s the sequence of events leading to the issue:

- Gravity Forms sends an AJAX request expecting JSON.

- BeTheme shortcode code executes during this request.

- It attempts to access $_FILES["file"], despite no file upload being present.

- PHP issues warnings.

- These warnings disrupt the JSON structure.

- JSON.parse() fails, causing the Gravity Forms editor to malfunction.

I have made modifications to the theme-shortcodes.php script on the staging site, and I can confirm that Gravity Forms is now functioning correctly there.

They suggested I submit the problem to you for a more formal inquiry.