I also encountered that before when using TSubclassOf<GE>, in Lyra there is a method BP_ApplyGameplayEffectToSelf, try implement that and call it instead, it should hopefully solve your issue.
I also encountered that before when using TSubclassOf<GE>, in Lyra there is a method BP_ApplyGameplayEffectToSelf, try implement that and call it instead, it should hopefully solve your issue.