add information that tar needs to be installed on the import servewr before the import can be started.

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Problem to solve

An error can be thrown during the import of an exported gitlab project: Error importing repository into ***** No such file or directory - tar

Further details

The last word of the error shows "tar", which in fact gives the clue.

Proposal

Add additional information that gnu tar must have been installed before attempting the import.

Who can address the issue

just add 1 new sentence/ warning to the manual

Other links/references