Thanks, Gustaf. Clean build directory remedied the issue.
We're in the process of slowly upgrading our project to RHEL 9. The build was the first step.
We're currently running the same Nginx proxy settings as those in front of our stage/prod server and the same config.tcl but with this new build and OpenACS 5.10 imported into our code base, page requests for / result in "too many redirects" errors. Looking for cookie settings and anything else that could be in play here. Do you have any suggestions? Any adjustments that might be necessary to config.tcl or on the NS side?
For example, from a different machine, a curl command like
curl -i -L https://mydomain.com/acs-admin/
results in a stream of 302s to
Location: https://mydomain.com/acs-admin/?
Thanks.