500 Internal Server - on hosting where other sites are fine

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I am almost embarrassed to post this, but I am very confused.

I run ~50 sites using concrete5. I have installed all of them without any problem...until yesterday.

I went through the normal procedure but when I typed the root domain I didn't get an installation screen, but a 500 Internal Sever error.

I run a VPS and have a shared hosting facility. I run sites on both and have encountered this problem on both.

As an experiment, I created a directory public_html/test within a user account that is successfully running 8.4.4, i.e PHP and MySQL are all good, and I experienced the same problem.

Any thoughts, as I am stumped.

 
mnakalay replied on at Permalink Reply
mnakalay
error 500 doesn't say much. Can you check the PHP error log and see what's in it?