Is it possible to get a 500 error due to htaccess?

Question

PHP

File itself: here .
htaccess: here
The problem is the following:
I uploaded the file to the hosting, when opening the file, 500 crashes.
Then I uploaded the same file to another site, there are no problems.
Please tell me what could be the problem, I think that there is some kind of restriction in htaccess, but I'm not good at it.
PS You can immediately throw stones.
Cause of the problem: old version of php, installed a more recent version, the problem was solved.
Thanks to everyone who helped.

Answer 1

maybe. if there are syntax errors in it.