String '/home/linuxbrew/.linuxbrew/opt' still exists in these files:

Cannot verify integrity of 'gfan--0.7.x86_64_linux.bottle.tar.gz'. No checksum was provided. For your reference, the checksum is: sha256 "21af3091c78d42a34c8324461febbe54b5dff34173024b6f52d2bff9a7172c9e"

/home/linuxbrew/.linuxbrew/Cellar/gmp/6.3.0 and /home/linuxbrew/.linuxbrew/Cellar/cddlib/0.94m are required by gfan, which is currently installed. You can silence this warning with: brew uninstall --ignore-dependencies cddlib gmp

Already linked: /home/linuxbrew/.linuxbrew/Cellar/gfan/0.7

gfan: no `post_install` method was defined in the formula!

The following openssl@3 configuration files have not been removed! If desired, remove them manually with `rm -rf`: /home/linuxbrew/.linuxbrew/etc/openssl@3 /home/linuxbrew/.linuxbrew/etc/openssl@3/cert.pem /home/linuxbrew/.linuxbrew/etc/openssl@3/certs /home/linuxbrew/.linuxbrew/etc/openssl@3/certs/.keepme /home/linuxbrew/.linuxbrew/etc/openssl@3/ct_log_list.cnf /home/linuxbrew/.linuxbrew/etc/openssl@3/ct_log_list.cnf.dist /home/linuxbrew/.linuxbrew/etc/openssl@3/misc /home/linuxbrew/.linuxbrew/etc/openssl@3/misc/CA.pl /home/linuxbrew/.linuxbrew/etc/openssl@3/misc/tsget /home/linuxbrew/.linuxbrew/etc/openssl@3/misc/tsget.pl /home/linuxbrew/.linuxbrew/etc/openssl@3/openssl.cnf /home/linuxbrew/.linuxbrew/etc/openssl@3/openssl.cnf.dist /home/linuxbrew/.linuxbrew/etc/openssl@3/private /home/linuxbrew/.linuxbrew/etc/openssl@3/private/.keepme