SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it.

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The following may help:
- Is MySQL running?
- Have you entered the correct hostname and port number for your MySQL server (typically it might be localhost:3306 or 127.0.0.1:3306) Check the correct hostname and port to use.
- Check your firewall on the server, is it blocking MySQL's port?
Are you installing your site locally on your computer or hosting it somewhere?

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