bacula: cannot restore without a bootstrap file

After a long time I decided to install and work with bacula again. After installation, configuration and running some jobs, I tried to restore a backup from the night. The result was the following:

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05-Nov 07:56 bacula-dir JobId 11: Fatal error: Cannot restore without a bootstrap file.
You probably ran a restore job directly. All restore jobs must be run using the restore command.
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