I need help debugging this error

Failed to call internal hook 'OnCollectiblePickup' on plugin 'BankSystem v1.3.12' [3290943891] (Object reference not set to an instance of an object)

at void Oxide.Plugins.BankSystem.OnCollectiblePickup(CollectibleEntity collectible, BasePlayer player) in /home/container/carbon/plugins/BankSystem.cs:line 1743

at object Oxide.Plugins.BankSystem.InternalCallHook(uint hook, object[] args) in BankSystem.cs/Internal:line 563

(16:43:13) | Failed to call internal hook 'OnCollectiblePickup' on plugin 'BankSystem v1.3.12' [3290943891] (Object reference not set to an instance of an object)

at void Oxide.Plugins.BankSystem.OnCollectiblePickup(CollectibleEntity collectible, BasePlayer player) in /home/container/carbon/plugins/BankSystem.cs:line 1743

at object Oxide.Plugins.BankSystem.InternalCallHook(uint hook, object[] args) in BankSystem.cs/Internal:line 563

After what does this error appear?

I'm not really sure, but this happens once in a while, I tried go collecting scrap around the map ( cause I set the currency to scraps )
But the error won't show up, just pops out like that. 

BankSystem.jsonHere is my config

BankSystem.json

Can we add the ability to deposit/withdraw money with /bank ?

17 hours ago, OfflineGotOfflined said:

Can we add the ability to deposit/withdraw money with /bank ?

at the moment - this feature is not available in the plugin.

Perhaps we will do it in future updates