Since two days the invoice (1.5) installation is throwing a 500 error if I want to download an invoice.
I think this is because of the migration of the server (another hosting environment).
In addition to that, the system still works. Am I missing a php package? and how can I debug this? Because if I do this
ini_set('display_startup_errors', 1); ini_set('display_errors', 1); error_reporting(-1);
I get a white page (without an error)