I'm getting a similar error.
Failed to call hook 'OnServerInitialized' on plugin 'RoadBradley v1.5.2' (IndexOutOfRangeException: Index was outside the bounds of the array.)
at (wrapper stelemref) System.Object.virt_stelemref_class_small_idepth(intptr,object)
at Oxide.Plugins.RoadBradley.SpawnTank (System.String profileName, System.String routeName) [0x001e3] in <2673bfe0820045be9de90161d39bcff6>:0
at Oxide.Plugins.RoadBradley.SpawnDefaultRouteTank (System.String route) [0x001f9] in <2673bfe0820045be9de90161d39bcff6>:0
at Oxide.Plugins.RoadBradley.OnServerInitialized () [0x005f9] in <2673bfe0820045be9de90161d39bcff6>:0
at Oxide.Plugins.RoadBradley.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x0008d] in <2673bfe0820045be9de90161d39bcff6>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <23ba99f131254889867c71f0bd137b1d>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <157a94ee66ab4a7991faecd1eb84be3b>:0
I've attached my config as well
RoadBradley.json