What on earth does "[SRDebugger] Error loading trigger prefab" mean?

When I run my project, I get these errors:

[SRDebugger] Error loading trigger prefab
UnityEngine.Debug:LogError(Object)
SRDebugger.Services.Implementation.DebugTriggerImpl:CreateTrigger()
SRDebugger.Services.Implementation.DebugTriggerImpl:set_IsEnabled(Boolean)
SRDebugger.Services.Implementation.SRDebugService:.ctor()
System.Activator:CreateInstance(Type)
SRF.Service.SRServiceManager:smile:efaultServiceConstructor(Type, Type)
SRF.Service.SRServiceManager:AutoCreateService(Type)
SRF.Service.SRServiceManager:GetServiceInternal(Type)
SRF.Service.SRServiceManager:GetService()
SRDebug:Init()
SRDebugger.AutoInitialize:OnLoad()

Can anyone give me a point in the right direction?

sounds like its this plugin, so might want to ask there,