Urgent PHP 404 Error Fix replace payment gateway keys

I need a quick yet thorough resolution to the 404 errors that started appearing on my PHP-based website right after I introduced some recent changes. The exact pages affected vary, and I’m not entirely sure which modification triggered the problem, so I’m looking for someone who can jump in, audit the codebase and server config, pinpoint the root cause, and restore normal page delivery across the site. Key expectations • Inspect any recent file edits, structural tweaks, or routing rules that could break links (.htaccess, [login to view URL], custom routers, CMS settings, etc.). • Repair or rewrite whatever’s causing the 404 responses, whether that means adjusting paths, correcting database references, or updating rewrite rules. • Test thoroughly so every public URL loads correctly once the fix is live. Please work directly on a staging copy or be ready to create backups before touching production. Once you’ve confirmed the solution, I’ll need a brief summary of what went wrong and which files you changed so I can avoid a repeat.

Projekt-ID: 40113574