Bug in Mailman

Error: We're sorry, we hit a bug! Please inform the webmaster for this site of this problem. Printing of traceback and other system information has been explicitly inhibited, but the webmaster can find this information in the Mailman error logs.

 Reason: One of the reason for the issue is that the folders in /usr/local/cpanel/3rdparty/mailman is not having sufficient permission.

Fix: You can perform the following steps to fix the issue:

Go to /usr/local/cpanel/3rdparty/mailman and check the permission of all the folders.

$ ls -al /usr/local/cpanel/3rdparty/mailman

Try

$ chmod -R 2775 ./*

 Now the permission of folders must have changed. Check if this has fixed the issue.

 If not, you can try running the fixmailman script in the server at /scripts.

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