Fatal error: Uncaught Error: Class "MBFS\Upgrade" not found in /home/.sites/822/site8796883/web/website/wp-content/plugins/mb-frontend-submission/mb-frontend-submission.php:54
Stack trace:
#0 /home/.sites/822/site8796883/web/website/wp-includes/class-wp-hook.php(353): mb_frontend_submission_load('')
#1 /home/.sites/822/site8796883/web/website/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters(NULL, Array)
#2 /home/.sites/822/site8796883/web/website/wp-includes/plugin.php(523): WP_Hook->do_action(Array)
#3 /home/.sites/822/site8796883/web/website/wp-settings.php(779): do_action('init')
#4 /home/.sites/822/site8796883/web/website/wp-config.php(115): require_once('/home/.sites/82...')
#5 /home/.sites/822/site8796883/web/website/wp-load.php(50): require_once('/home/.sites/82...')
#6 /home/.sites/822/site8796883/web/website/wp-blog-header.php(13): require_once('/home/.sites/82...')
#7 /home/.sites/822/site8796883/web/website/index.php(17): require('/home/.sites/82...')
#8 {main}
  thrown in /home/.sites/822/site8796883/web/website/wp-content/plugins/mb-frontend-submission/mb-frontend-submission.php on line 54