500 read timeout

Hello,
When trying to validate my site https://www.personal.kent.edu/~jschilen the validator at https://validator.w3.org/ is saying
Sorry! This document cannot be checked.
Error
I got the following unexpected response when trying to retrieve <https://www.personal.kent.edu/~jschilen/>:
500 read timeout

However I found that if I use the Nu checker it works fine: https://validator.w3.org/nu/?doc=https%3A%2F%2Fwww.personal.kent.edu%2F%7Ejschilen
Are there logs that could be checked to determine the issue on the hosting side?
Thank you,
Jeremiah