[FIXED] Mamp Pro Apache won't start on MacOS Catalina

Issue

Apache won't start anymore.

I tried most solutions on the internet. Nothing is working. In apache_error.log I get:

[Fri Dec 27 20:33:10 2019] [alert] Child 5905 returned a Fatal error... Apache is exiting!
[Fri Dec 27 20:33:10 2019] [alert] (22)Invalid argument: getpwuid: couldn't determine user name from uid 4294967295, you probably need to modify the User directive
[Fri Dec 27 20:33:10 2019] [alert] (22)Invalid argument: getpwuid: couldn't determine user name from uid 4294967295, you probably need to modify the User directive
[Fri Dec 27 20:33:10 2019] [alert] (22)Invalid argument: getpwuid: couldn't determine user name from uid 4294967295, you probably need to modify the User directive

Now this dude/dudette here says to reset the default

But that doesn't help.

What to do?

Solution

Just found the answer myself.

Reset the templates is not enough.

File > Edit Template > Revert all Templates to default settings…

And then also:

File > Factory Setting > Setting 1

Then I set the ports back to 80… via the standard ports button.

Now it works 🎉

Answered By - KSPR