conflict with generatepress ?

I have installed the plugin
After activating following failure meesage apears:

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘lmt_generatepress_theme_schema_fix’ not found or invalid function name in /www/htdocs/w011d2bf/blog/wp-includes/class-wp-hook.php on line 288

What can I do ?

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