Wkhtmltopdf failed (error code: -11)

[yazan7978]

when i make report for less than 80 page work correctly, if i make report more than 80 paper give me error :
Wkhtmltopdf failed (error code: -11). Memory limit too low or maximum file number of subprocess reached. Message : b''.

[tebanep]

We are experiencing the exact same problem when printing large documents with version v0.12.5 in Ubuntu 20.04. This wasn't happening in Ubuntu 18.04 with version 0.12.1.3 of wkhtmltopdf. ¿Could this be due to a server misconfiguration? I attest that It has plenty of RAM, though.

[urna]

+1 wkhtmltopdf 0.12.6 (with patched qt)

[urna]

here is the solution:

Dear, When you try to generate a big pdf (over 200 pages) with header and footer, you are an error -11. It is a limitation of max handle file per process. (default is 256 for mac). But the wkhtmltopdf open for each page the header and the footer. to change this value : http://stackoverflow.com/questions/16526783/python-subprocess-too-many-open-files

In terminal do : ulimit -n 10000
Check : ulimit -a

#2507