I am new to Symfony and started doing some tutorials in order to get some things done. I am working on a Linux Mint 18 machine and a standard Symfony3-project.
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[PDOException] SQLSTATE[HY000] [2002] No such file or directory
This error occurs generally when your web application is not connected to the database. As per your parameter.yml it's searching for mysql server & wasn't getting connected because at that time mysql wasn't installed there at your machine.