critical error

I just installed the plugin seo-by-rank-math.1.0.41, yoast was deactivated and I have a critical error so the installation assistant is not working, only this shows up:

Warning: include_once(/home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2_Hookup.php): failed to open stream: No such file or directory in /home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/helper-functions.php on line 44 Warning: include_once(): Failed opening ‘/home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/CMB2_Hookup.php’ for inclusion (include_path=’.:/usr/local/php5/lib/php’) in /home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/vendor/cmb2/cmb2/includes/helper-functions.php on line 44 Fatal error: Uncaught Error: Class ‘CMB2_Hookup’ not found in /home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/includes/admin/class-registration.php:204 Stack trace: #0 /home/.sites/265/site9616924/web/wp-includes/class-wp-hook.php(288): RankMath\Admin\Registration->render_page(”) #1 /home/.sites/265/site9616924/web/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #2 /home/.sites/265/site9616924/web/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /home/.sites/265/site9616924/web/wp-admin/admin.php(170): do_action(‘admin_init’) #4 {main} thrown in /home/.sites/265/site9616924/web/wp-content/plugins/seo-by-rank-math/includes/admin/class-registration.php on line 204
Es gab einen kritischen Fehler auf deiner Website. Bitte überprüfe den Posteingang deiner Website-Administrator-E-Mail-Adresse für weitere Anweisungen.

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