Unable to open Mailman admin interface: We're sorry, we hit a bug!

Created:

2016-12-18 06:50:43 UTC

Modified:

2017-08-08 13:34:11 UTC

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Unable to open Mailman admin interface: We're sorry, we hit a bug!

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

Unable to open Mailman admin interface. The following error is shown:

Bug in Mailman version 2.1.12

We're sorry, we hit a bug!

The following errors can be found in file /var/log/mailman/error :

-------------------------------------------------
admin(443947): os.link(fname, fname_last)
admin(443947): OSError: [Errno 13] Permission denied
-------------------------------------------------

Cause

OS restrict users to create hardlinks and symlinks to the files they do not own.

Resolution

  1. Change values in /etc/sysctl.conf :

    fs.protected_symlinks_create = 0

    fs.protected_hardlinks_create = 0
  2. Apply changes:

    # sysctl -p
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