MySQL Error!

Date: [18:27:02] 3.08.2020 +0300

MySQL:
Query:                 select * from ds_users where status=1 and activate=1 and md5(sha1(concat_ws(':', email, password)))='d41d8cd98f00b204e9800998ecf8427e'
mysql_error():         MySQL server has gone away
mysql_errno():         2006
mysql_server_info():   5.7.27-0ubuntu0.18.04.1

Script:
SCRIPT_FILELINE:       /var/www/allmoscowshop/data/www/allmoscowshop.ru/modules/engine.php:30
SCRIPT_FILENAME:       /var/www/allmoscowshop/data/www/allmoscowshop.ru/index.php

Request:
REQUEST_URI:           /avtoservisy_avtotehtcentry/?page_num=2
QUERY_STRING:          module=avtoservisy_avtotehtcentry&page_num=2
HTTP_REFERER:          
HTTP_HOST:             www.allmoscowshop.ru
REQUEST_METHOD:        GET

Server:
SERVER_SOFTWARE:       Apache/2.4.29 (Ubuntu)
SERVER_PORT:           80
SERVER_NAME:           www.allmoscowshop.ru

User:
HTTP_USER_AGENT:       CCBot/2.0 (https://commoncrawl.org/faq/)
REMOTE_ADDR:           3.236.159.130
REMOTE_PORT:           57540