Hello,
(Mon MarĀ 8 17:45:15 2021) [sssd] [sysdb_domain_cache_connect] (0x0010): DB version too new [0.22], expected [0.21] for domain implicit_files!
I'm not sure if this and crash are related, but let's start with this.
It looks like you downgraded sssd version.
Could you please check if `rm -rf /var/lib/sss/db/*` helps to get rid of those messages? (warning: this will removed all cached data, but seems in your case there shouldn't be anything useful yet)