Error 500: Internal Server Error Error: Cannot open script file /var/www/html/admin/login.lp

[deHakkelaar]

What does below one show?

$ file /var/www/html/admin/login.lp
/var/www/html/admin/login.lp: HTML document, ASCII text

Raspi's have a reputation of crashing when the supplied power is of poor quality.
Have a read below:

500 Internal Server Error

Does below one show any Under-voltage messages? sudo journalctl --full --no-hostname --pager-end --grep voltage If so, have a look below: If you see warnings, switch to a higher quality power supply and cable. Low quality power supplies can corrupt storage or cause unpredictable behaviour within the Raspberry Pi. https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#power-supply-warnings