[QGIS-Developer] QGIS Doc Travis

[matteo]

Hi all,

we (Richard, me, Harrissou) are trying to build the QGI doc (3.19) with
the rtd theme (thank to Harrissou and Richard jobs).

All the progress are on branch qgisdoc2020 in the official
QGIS-Documentation repository:

https://github.com/qgis/QGIS-Documentation/tree/qgisdoc2020

But we are stuck with Travis:

https://travis-ci.org/github/qgis/QGIS-Documentation/builds/662445827?utm_source=github_status&utm_medium=notification

can some Travis guru have a look and help us fix it?

Cheers and thanks

Matteo