[OSGeo] #3052: Upgrade pretalx to latest version

[OSGeo]

#3052: Upgrade pretalx to latest version
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 Reporter:  robe      |       Owner:  sac@…
     Type:  task      |      Status:  reopened
 Priority:  normal    |   Milestone:  Sysadmin Contract 2024-I
Component:  SysAdmin  |  Resolution:
 Keywords:            |
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Comment (by robe):

 One more interesting development.  I am having the same issue on
 talk.staging.osgeo.org, but I noticed if I flip the switch from debug =
 False to debug = True, it works properly.

 This of course is not desirable, so I'm troubleshooting this some more and
 will report upstream if I conclude all my config settings are set
 properly.
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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/3052#comment:9>
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