Symfony3 - SQLSTATE[HY000] [2002] No such file or directory

Question

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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Answer 1

Had the same error.

OS: macOS High Sierra. MAMP 5.0.1

The problem was that the default MySQL port on MAMP was 8889 and in parameters.yml it was 3306