Cannot restore a site: "Duplicate entry for key

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I cannot restore a site with utility "bru.php":
#/usr/bin/sw-engine /usr/local/sb/utils/bru.php --restore --target=site --uuid=38fb60ce-975c-d623-0484-111e9a3d299a --file=38fb60ce-975c-d623-0484-111e9a3d299a.zip
Restoring the site with UUID: 38fb60ce-975c-d623-0484-111e9a3d299a
Error: Site (38fb60ce-975c-d623-0484-111e9a3d299a) can't be restored. Table 'widget' - SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '7c2398d5-06b5-09c5-5291-1d4e79a1d9cd' for key 2

Parallels Presence Builder version : 12.0.5

 

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Hi, Is there any suggestions??