Not really sure where to post this but Github issues pointed me here.
Today links to graphs stopped working for me because the slash (/) was missing between the hostname and the path, all other links worked for me. I fixed this by appending a slash in the base_url in the config.
Including the slash seems like the good way to set it but it’s inconsistent from before and not how it’s documented here: https://docs.librenms.org/Support/Configuration/.