Fatal error: Uncaught Error: Call to a member function prepare() on null

[SalimF]

after stetting the plugin I got theses error messages

Fatal error: Uncaught Error: Call to a member function prepare() on null in /var/www/vide2/wp-content/db.php:1645 Stack trace: #0 /var/www/vide2/wp-content/db.php(1408): WP_SQLite_DB\PDOEngine->prepare_query() #1 /var/www/vide2/wp-content/db.php(2741): WP_SQLite_DB\PDOEngine->query() #2 /var/www/vide2/wp-includes/wp-db.php(2696): WP_SQLite_DB\wpsqlitedb->query() #3 /var/www/vide2/wp-includes/option.php(238): wpdb->get_results() #4 /var/www/vide2/wp-includes/functions.php(1723): wp_load_alloptions() #5 /var/www/vide2/wp-includes/load.php(709): is_blog_installed() #6 /var/www/vide2/wp-settings.php(159): wp_not_installed() #7 /var/www/vide2/wp-config.php(100): require_once('/var/www/vide2/...') #8 /var/www/vide2/wp-load.php(37): require_once('/var/www/vide2/...') #9 /var/www/vide2/wp-blog-header.php(13): require_once('/var/www/vide2/...') #10 /var/www/vide2/index.php(17): require('/var/www/vide2/...') #11 {main} thrown in /var/www/vide2/wp-content/db.php on line 1645

Fatal error: Uncaught Error: Call to a member function prepare() on null in /var/www/vide2/wp-content/db.php:1645 Stack trace: #0 /var/www/vide2/wp-content/db.php(1408): WP_SQLite_DB\PDOEngine->prepare_query() #1 /var/www/vide2/wp-content/db.php(2741): WP_SQLite_DB\PDOEngine->query() #2 /var/www/vide2/wp-includes/wp-db.php(2696): WP_SQLite_DB\wpsqlitedb->query() #3 /var/www/vide2/wp-includes/option.php(238): wpdb->get_results() #4 /var/www/vide2/wp-includes/option.php(117): wp_load_alloptions() #5 /var/www/vide2/wp-includes/l10n.php(69): get_option() #6 /var/www/vide2/wp-includes/l10n.php(137): get_locale() #7 /var/www/vide2/wp-includes/l10n.php(828): determine_locale() #8 /var/www/vide2/wp-includes/class-wp-fatal-error-handler.php(46): load_default_textdomain() #9 [internal function]: WP_Fatal_Error_Handler->handle() #10 {main} thrown in /var/www/vide2/wp-content/db.php on line 1645