Error message

• Notice: Trying to get property of non-object in og_ui_get_group_admin() (line 1122 of /var/www/html/websites/drupal/master/sites/all/modules/og/og_ui/og_ui.module).
• Notice: Trying to get property of non-object in publishcontent_tab_load() (line 66 of /var/www/html/websites/drupal/master/sites/all/modules/publishcontent/publishcontent.module).
• Notice: Trying to get property of non-object in publishcontent_tab_load() (line 66 of /var/www/html/websites/drupal/master/sites/all/modules/publishcontent/publishcontent.module).