You need OptiFine 1.17.1 OptiFine HD U G9 and OptiFine HD U H1 pre7 (or higher version) to make this resource pack work properly.

CMM Alpha_version_0.5 1.17.1

New:
- Nothing to add, just bring CMM 1.16.5 to fix it for use in 1.17.1
- Fixed Creeper and Squid bugs in 1.17.

