QGIS Server responds with HTTP 500 error

[qgib]

Author Name: dr - (dr -)
Original Redmine Issue: 16994
Affected QGIS version: master
Redmine category:qgis_server

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Apache log:

QXcbConnection: Could not connect to display 
[Thu Aug 10 01:47:39.646423 2017] [fcgid:warn] [pid 17523] (104)Connection reset by peer: [client ::1:38822] mod_fcgid: error reading data from FastCGI server
[Thu Aug 10 01:47:39.646542 2017] [core:error] [pid 17523] [client ::1:38822] End of script output before headers: qgis_mapserv.fcgi
[Thu Aug 10 01:47:41.934080 2017] [fcgid:error] [pid 17522] mod_fcgid: process /usr/lib/cgi-bin/qgis_mapserv.fcgi(17539) exit(communication error), get signal 6, possible coredump generated

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Is the server headless?
if yes see: https://www.itopen.it/qgis-server-setup-notes/

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• status_id was changed from Open to Feedback

[qgib]

Author Name: dr - (dr -)

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Thanks for advice, with Xfvb it works as should. Is it QGIS3 only specific requirement?

[qgib]

Author Name: dr - (dr -)

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• resolution was changed from to wontfix
• status_id was changed from Feedback to Closed

[qgib]

Author Name: Giovanni Manghi (@gioman)

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dr - wrote:

Thanks for advice, with Xfvb it works as should. Is it QGIS3 only specific requirement?

no, is also necessary for QGIS 2.* anytime you want to do GetPrints that include advanced symbology or text boxes with html content.