Failed to call hook 'OnMapMarkerRemove' on plugin 'RustCore v2.0.5788' (ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index)

at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000fb] in <157a94ee66ab4a7991faecd1eb84be3b>:0

at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <157a94ee66ab4a7991faecd1eb84be3b>:0

(15:29:10) | Failed to call hook 'OnMapMarkerRemove' on plugin 'RustCore v2.0.5788' (ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index)

You have a plugin using 'OnMapMarkerRemove'.

This hook was changed.

chrome

You have a plugin using 'OnMapMarkerRemove'.

This hook was changed.

How its working now?

chrome

You have a plugin using 'OnMapMarkerRemove'.

This hook was changed.

I'm using it in Vanilla also get that

I also get this with Oxide installed and no plugins loaded.

It appears to be an hook built into the Oxide core. This appears to be a change that is related to the new map marker features that were recently added to this build of Rust. Oxide would need to push an update that fixes this.