SQLSTATE[HY000] [2002] Connection timed out (SQL: select * from `sessions` where `id` = Me2dEG11Zq4pJBhzCoWlhZwZuWPebKdGPLyhuleg limit 1)

I have a problem, my web site was working without problems, but when I enter any product, the web site does not work and gives this error I made

php artisan cache:clear
php artisan key:generate
php artisan cache:clear
php artisan make:command FlushSessions
php artisan session:flush

And I Deleted the data into the sessions table inside the Database But the problem has not been resolved

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