Hey guys,

I’m encountering a 406 Not Acceptable error when submitting forms on my website. The issue is inconsistent—sometimes the form submits successfully, but other times it results in this error. I’ve checked the request headers and content type but haven’t found a clear cause.

During my research, I found this blog explaining the 406 status code. It covers possible reasons behind the error, but I’d like to hear from others who have dealt with this issue firsthand.

Could this be related to server configurations, content negotiation, or security rules like mod_security? What are the best steps to debug and resolve it? Any insights would be greatly appreciated!