Mod failed to load in modpack

[Longtianmu]

In modpack CosmicFrontiers 0.8.0 nightly-23, when using PCF in server (Forge47.4.10)
it throws:
Caused by: java.lang.IllegalArgumentException: Both Forge and Fabric platforms detected, but neither Connector nor Kilt found. Cannot determine primary platform.

PCF 1.2.2 works well with modpack. Latest PCF(1.2.6) crashed.

[p0t4t0sandwich]

I think I know what issue causes that, and if I remember correctly it should be fixed for the next release, but I'll test using that pack to be sure.