restore settings

Hello,

i want to import the backup file from ciphermail 4.11 (CentOS7) to a ciphermail 4.11 (ubuntu 20.4).
Unfortunately it doesn't work. After clicking on the "restore buckup" button it comes an error the page cannot be reached (
https://xxx.xxx.xx.xx/ciphermail/admin/backup/create.form).

What do i have to do?

Best regards

Jürgen Weppert

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