error 2003 (hy000): can't connect to mysql server on 'localhost' (10061)
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errors were encountered while processing: mysql-server-5.7 mysql-server e: sub-process /usr/bin/dpkg returned an error code (1)
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Your connection attempt failed for user 'root' to the MySQL server at localhost:3306: An AppArmor policy prevents this sender from sending this message to this recipient
psql: error: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?
could not connect to server: Connection refused Is the server running on host and accepting TCP/IP connections on port 5432?
psycopg2.OperationalError: could not connect to server: Connection refused Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432?