Convos before 4.20 does not properly generate a random secret in Core/Settings.pm and Util.pm. This leads to a predictable CONVOS_LOCAL_SECRET value, affecting password resets and invitations.
https://github.com/Nordaaker/convos/compare/4.19...4.20
https://github.com/Nordaaker/convos/commit/54d1763ac65c05aad27ad454b4e5a62ba8352d39
https://convos.chat/blog/2020/6/18/local-secret-got-more-secure