Is that name the only one of the certificate?
The common name of a certificate is limited to 63 char. To create a certificate for a domain longer than that, you need to create a certificate with at lieast two SAN names where the common name (usually the first SAN name) is less than 63 char.
In your case, it should looks like:
/acme.sh/acme.sh --issue --force -d small-other-domain-you-control.example.com -d ‘*.lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll.xyz’ -d ‘lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll.xyz’ --dns --yes-I-know-dns-manual-mode-enough-go-ahead-please --debug