Issue:
When installing yourls and clicking the INSTALL button under /admin/install.php you get a server Error 500 and the following error shows up in the log:

2018/12/08 21:22:10 [error] 21768#21768: *2 FastCGI sent in stderr: “PHP message: PHP Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1071 Specified……