Beta Variable not set before reading error

[tkhris]

On the beta to use new rollback. From what I can tell SnowState should work with it but getting an error

---

############################################################################################
ERROR in
action number 1
of Step Event0
for object obj_player:

Variable struct.event(100060, -2147483648) not set before reading it.
at gml_Script_anon_anon_SnowState_gml_GlobalScript_SnowState_4416_SnowState_gml_GlobalScript_SnowState_4532_anon_SnowState_gml_GlobalScript_SnowState_4416_SnowState_gml_GlobalScript_SnowState (line 159) - exec(event, undefined, _args);
############################################################################################
gml_Script_anon_anon_SnowState_gml_GlobalScript_SnowState_4416_SnowState_gml_GlobalScript_SnowState_4532_anon_SnowState_gml_GlobalScript_SnowState_4416_SnowState_gml_GlobalScript_SnowState (line 159)
gml_Object_obj_player_Step_0 (line 9) - fsm.step();

[tkhris]

I am on the beta version here https://gms.yoyogames.com/ReleaseNotes-NuBeta.html Version 2022.800.0.180