Have been facing a typical issue in PDF generation in all Selling module only. It gives error of 504 Gateway Time-out. While at same time PDF generation in all other modules like Buying, CRM etc works fine.
I had custom format for Quotation, Sales Order & Invoice before I upgraded to version 7, which I deleted and reverted to standard format in my quest to solve the issue. But it didn’t work. Later I found if I remove “encryption_key”: “SJ…”, from site config file the it solves the problem and PDF generation works fine in all modules including Selling.
But each update re-writes this config file with encryption key so I have to change it manually each time after update to solve the issue. Can anyone suggest some permanent solution?