I don’t know if anyone else has experienced this, but the Microsoft documentation provides this as an example for the above command

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Psconfig –cmd configdb –create –server _servername_ –database _databasename_ –user _username_ –password _userpassword_ –admincontentdatabase _databasename_

I tried running this and kept getting the following error

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The -create command is invalid

This drove me made until I removed the “-“ from the beginning of the create parameter and then I got the following error

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The -server command is invalid

My amazing mind realized that a pattern was emerging and I went ahead and removed all the dashes from the parameters to end up with the following command.

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Psconfig –cmd configdb create server _servername_ database _databasename_ user _username_ password _userpassword_ admincontentdatabase _databasename_

Hey Presto my “SharePoint Products and Technologies Configuration Wizard” began chugging away