My three CodeIgniter-based sites sit on the same shared host and all run essentially the same certificate-issuing module. After a malware clean-up the PDF generation route now returns an HTTP 500, even though every other area of each application still works perfectly. Nothing new has been deployed since, so the fault is almost certainly a missing file, a permissions tweak, or a library path/config setting that was disturbed during the clean-up. What I need is straightforward: trace whatever is breaking the PDF routine, repair it, and replicate the fix across the other two copies of the application. Once the job is done I expect to be able to click “Generate Certificate” on any of the three sites and immediately receive a valid PDF without a 500 error. CodeIgniter experience (preferably with common PDF helpers such as TCPDF, FPDF or dompdf) and comfort debugging on a shared cPanel/LAMP stack will make the task fast. No core refactor is required—just locate the broken link in the PDF workflow and restore it, keeping the rest of the codebase intact. I will grant temporary FTP/cPanel and app access. As soon as you confirm PDFs render correctly in each app, the job is complete and payment is released.