[Bitrix\Main\DB\ConnectionException]
Mysql connect error [localhost, 127.0.0.1]: Resource temporarily unavailable (400)
/home/c/cf501511/public_html/bitrix/modules/main/lib/db/mysqlconnection.php:50
#0: Bitrix\Main\DB\MysqlConnection->connectInternal()
/home/c/cf501511/public_html/bitrix/modules/main/lib/db/mysqlconnection.php:103
#1: Bitrix\Main\DB\MysqlConnection->queryInternal(string, NULL, NULL)
/home/c/cf501511/public_html/bitrix/modules/main/lib/db/connection.php:329
#2: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
/home/c/cf501511/public_html/bitrix/modules/main/lib/db/connection.php:357
#3: Bitrix\Main\DB\Connection->queryScalar(string)
/home/c/cf501511/public_html/bitrix/modules/security/lib/session.php:111
#4: Bitrix\Security\SessionTable::lock(string, integer)
/home/c/cf501511/public_html/bitrix/modules/security/classes/general/session_db.php:52
#5: CSecuritySessionDB::read(string)
#6: session_start()
/home/c/cf501511/public_html/bitrix/modules/main/include.php:301
#7: require_once(string)
/home/c/cf501511/public_html/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
/home/c/cf501511/public_html/bitrix/rk.php:7
Fatal error: Uncaught exception 'Bitrix\Main\DB\ConnectionException' with message 'Mysql connect error [localhost, 127.0.0.1]: Resource temporarily unavailable' in /home/c/cf501511/public_html/bitrix/modules/main/lib/db/mysqlconnection.php:50
Stack trace:
#0 /home/c/cf501511/public_html/bitrix/modules/main/lib/db/mysqlcommonconnection.php(130): Bitrix\Main\DB\MysqlConnection->connectInternal()
#1 /home/c/cf501511/public_html/bitrix/modules/main/lib/db/connection.php(715): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session')
#2 /home/c/cf501511/public_html/bitrix/modules/main/lib/db/sqlhelper.php(387): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID')
#3 /home/c/cf501511/public_html/bitrix/modules/main/lib/entity/datamanager.php(815): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'zXiyt9Z2PyJG8An...')
#4 /home/c/cf501511/public_html/bitrix/modules/security/classes/general/session_db.php(92): Bitrix\Main\Entity\DataManager::delete('zXiyt9Z2PyJG8An...')
#5 [ in /home/c/cf501511/public_html/bitrix/modules/main/lib/db/mysqlconnection.php on line 50