Blueprint runtime error accessed none trying to read property

Hi. I have an error in the message log regarding Accessed None Trying to Read Property. Some have solutions. Thanks.

I do not understand the error in the log message.

Source: [Eng] Complex Quest System: Implementing the Talking Template #21 - YouTube

Hi,

It seems, when overlap event was triggered, your QuestManagerRef inside BP_RoleTank wasn’t initialized properly.
Can you provide more details, e.g. how you obtaining QuestManagerRef?

I have initialized the Quest_Manager_Ref variable in bp_role_tank.

You can print out a “display name” after quest_manager_ref assign. And inside quest trigger blueprint print between cast to bp_RoleTank and branch. Make sure that overlap wasn’t triggered before quest_manager_ref was assigned.

Thank you for the solution

This is a common error. Check out video #27 in the link below it may give you some insight as to the cause of your issue.