Can't migrate Domain with WP

Hello,
i trie to migrate a Domain with WP from a Server with 11.5 to an new Server with 12.5.

The Domain ist created, but there is no content and i get this error.

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[20 Nov 16 21:25:20] [Migration] Failed to transfer WPB sites of subscription 'Domain.de'

Migration tools tried to perform operation in 3 attempts.

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Attempt #1 failed with the following error:

Command execution failed on the local server with...

Can't migrate Domain with WP