[SAC] [OSGeo] #2533: Set up debian11 for grasswiki

[OSGeo]

#2533: Set up debian11 for grasswiki
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 Reporter:  robe            |       Owner:  sac@…
     Type:  task            |      Status:  new
 Priority:  normal          |   Milestone:  Sysadmin Contract 2022-I
Component:  Systems Admin   |  Resolution:
 Keywords:  Mediawiki, lxd  |
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Comment (by neteler):

 There is still an error:

 Error creating thumbnail: Unable to save thumbnail to destination

 in several places. Would you mind to check the permissions?

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2533#comment:21>
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