EifX\DatabaseConnector\DatabaseException: (2002) SQLSTATE[HY000] [2002] No such file or directory

#5    at /opt/app/backend/vendor/eifx/databaseconnector/src/DatabaseException.php:35
#4    at EifX\DatabaseConnector\DatabaseException.otherException(/opt/app/backend/vendor/eifx/databaseconnector/src/AbstractDatabase.php:27)
#3    at EifX\DatabaseConnector\AbstractDatabase.__construct(/opt/app/backend/vendor/eifx/databaseconnector/src/MySQLDatabase.php:26)
#2    at EifX\DatabaseConnector\MySQLDatabase.__construct(/opt/app/backend/vendor/eifx/databaseconnector/src/DatabaseFactory.php:30)
#1    at EifX\DatabaseConnector\DatabaseFactory.create(/opt/app/backend/index.php:29)
#0    at require(/opt/app/index.php:3)

EifX\DatabaseConnector\DatabaseException: (2002) SQLSTATE[HY000] [2002] No such file or directory

#5    at /opt/app/backend/vendor/eifx/databaseconnector/src/DatabaseException.php:35
#4    at EifX\DatabaseConnector\DatabaseException.otherException(/opt/app/backend/vendor/eifx/databaseconnector/src/AbstractDatabase.php:27)
#3    at EifX\DatabaseConnector\AbstractDatabase.__construct(/opt/app/backend/vendor/eifx/databaseconnector/src/MySQLDatabase.php:26)
#2    at EifX\DatabaseConnector\MySQLDatabase.__construct(/opt/app/backend/vendor/eifx/databaseconnector/src/DatabaseFactory.php:30)
#1    at EifX\DatabaseConnector\DatabaseFactory.create(/opt/app/backend/index.php:29)
#0    at require(/opt/app/index.php:3)