I need to merge several PDF files into a single PDF file, I have been trying to find a solution since then, and I have tried to use this PDFMerger and it does not work, I did exactly as described in the information given by them and gives the error is this:
Fatal error: Uncaught Error: Class 'PDFMerger\exception' not found in
There are 3 PDF files I need to put together and I do not know what else to do