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Fixed #Ubuntu AH00558: apache2: Could not reliably determine the server's fully qualified domain. - YouTube
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Ubuntu 18.04 won't boot after setting apache variable from www-data to root... I am beginner and messed up, desperately need help : r/Ubuntu
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Ubuntu Apache Error: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 - ItSolutionStuff.com
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