This url worked fine:

https://chrismorgan.info/no-query-strings#:~:text=So%20I%E2%...

but this one was too long:

https://chrismorgan.info/no-query-strings?a=1

Doh! The part past the # does not go to the sever, so that wasn't a longer URL. How about:

https://chrismorgan.info/%6e%6f-%71%75%65%72%79-%73%74%72%69...