Member page issue

I am having a big problem with members ability to add content with posts.

when adding a post, this message arises:

Warning: array_search() expects parameter 2 to be array, null given in /home4/vergemm/public_html/mobilized.news/wp-content/plugins/mojo-marketplace-wp-plugin/inc/menu.php on line 42

Warning: Cannot modify header information - headers already sent by (output started at /home4/vergemm/public_html/mobilized.news/wp-content/plugins/mojo-marketplace-wp-plugin/inc/menu.php:42) in /home4/vergemm/public_html/mobilized.news/wp-admin/includes/misc.php on line 1114

Warning: Cannot modify header information - headers already sent by (output started at /home4/vergemm/public_html/mobilized.news/wp-content/plugins/mojo-marketplace-wp-plugin/inc/menu.php:42) in /home4/vergemm/public_html/mobilized.news/wp-includes/pluggable.php on line 1216