Internal error 500 when generating PDF v1.3.3

I just recently installed Invoice plane and started playing with it. So far, it’s really great.
The only problem I’ve got is a 500 error when I try (or a guess) tries to generate a PDF file from an invoice.

My error log does not show anything on my server, I can only see the access log : - - [15/May/2015:16:00:01 -0400] "GET /invoices/generate_pdf/1 HTTP/1.1" 500 - "" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36"

Anyone else has the same problem ?
Thanks !

In this case set the log_threshold from 0 to 2 in the file /application/config/config.php
Now try to generate that PDF again.
Then share the logs from /application/logs with us, use for that.

Hello Kovah, thanks for the reply. You can see the log here :


There are a lot of mPDF undefined index errors, but this is not an “unusual behaviour”.
Are you really sure that apache didn’t logged anything? Because normally the webserver should write something to the logs if an error 500 occurs.