Failed to call hook 'OnCollectiblePickup'

Hi,

After the latest update, I’m encountering the following error in the console:
 

10/05 00:23:56 | Failed to call hook 'OnCollectiblePickup' on plugin 'RoamTasks v1.1.5' (ArgumentNullException: Value cannot be null.
Parameter name: source)
at System.Linq.Enumerable.Any[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x0000d] in <a314714511a14f84b853c03efd8682b8>:0
at Oxide.Plugins.RoamTasks.OnCollectiblePickup (CollectibleEntity entity, BasePlayer player) [0x0006b] in <935400518c5e4402b679b4f76592ebbb>:0
at Oxide.Plugins.RoamTasks.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0080b] in <935400518c5e4402b679b4f76592ebbb>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <206a0f2c6ee141f38e2ad549cde44d70>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <beb2b64691c64e2b95b99491bd85442c>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <beb2b64691c64e2b95b99491bd85442c>:0