[NSFW] Warning error message Synced: wmcc-network.php on line 371

Hello, I get Synced Waring messages when you syncronize the multisite-pages:

Synced:
Warning: Undefined array key 10 in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371

Warning: Attempt to read property “path” on bool in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371

Warning: Attempt to read property “blogname” on bool in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371
(),`

Warning: Undefined array key 11 in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371

Warning: Attempt to read property "path" on bool in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371

Warning: Attempt to read property "blogname" on bool in /homepages/46/d810723021/htdocs/rette-dein-geld-eu/wp-content/plugins/wp-multisite-content-copier-pro/includes/wmcc-network.php on line 371
(), rette-dein-geld.eu/v5651/ (Christa Hieronymus),

… etc.

How can I fix this. I had to delete and recreate some multisites. Since then this error occurs when synchronizing. Many thanks for your help

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