Resolve "Data Size Too Large" Issue

I'm encountering a "Data size too large" error on my website when submitting small text through a form in the User Profile section. This is a text-only submission, so the data being sent is not particularly large. The ideal freelancer for this project should have experience with web development and troubleshooting, particularly with form submissions and server-side data handling.

This error occurs every day and sometimes hundreds of times.