he need to add the motions for wait thats why character is underground has no animation paste that and should work
or try with this
## GENERAL MODE
SetGeneralMotions(chr.MOTION_MODE_GENERAL, path + "general/")
chrmgr.SetMotionRandomWeight(chr.MOTION_MODE_GENERAL, chr.MOTION_WAIT, 0, 70)
chrmgr.RegisterCacheMotionData(chr.MOTION_MODE_GENERAL, chr.MOTION_WAIT, "wait_1.msa", 30)
chrmgr.RegisterCacheMotionData(chr.MOTION_MODE_GENERAL, chr.MOTION_COMBO_ATTACK_1, "attack.msa", 50)
chrmgr.RegisterCacheMotionData(chr.MOTION_MODE_GENERAL, chr.MOTION_COMBO_ATTACK_1, "attack_1.msa", 50)