Uncaught Error: Call to undefined function dbDelta() in /home/monsters/public_html/wp-content/plugins/sirv/sirv.php on line 165

• fix_db()
  wp-content/plugins/sirv/sirv.php:109
• sirv_upgrade_plugin()
  wp-includes/class-wp-hook.php:288
• apply_filters()
  wp-includes/class-wp-hook.php:312
• do_action()
  wp-includes/plugin.php:478
• do_action()
  wp-settings.php:392
• require_once()
  wp-config.php:66
• require_once()
  wp-load.php:37
• require_once()
  wp-blog-header.php:13
• require()
  index.php:17