It happens for me too.
Situation - playing a co-op game hosted on someone else's computer.
Electric fences are located at our horde base, hooked to a switch.
Land claim is mine, my partner set up the fences. Other electrical at the base include spotlights, auto turrets (shotgun and SMG), and blade traps.
The following is the log excerpt from last night when it occurred most recently.
2022-08-06T00:28:51 16894.310 INF Time: 280.17m FPS: 29.40 Heap: 6783.0MB Max: 6862.3MB Chunks: 243 CGO: 167 Ply: 2 Zom: 0 Ent: 3 (71) Items: 0 CO: 1 RSS: 5416.4MB
2022-08-06T00:29:21 16924.346 INF Time: 280.67m FPS: 23.84 Heap: 6801.2MB Max: 6862.3MB Chunks: 243 CGO: 167 Ply: 2 Zom: 0 Ent: 3 (71) Items: 0 CO: 1 RSS: 5402.8MB
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
NullReferenceException: Object reference not set to an instance of an object
at ElectricWireController.DamageSelf (System.Single damage) [0x000dc] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.touched (UnityEngine.Collider collider) [0x0019f] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
at ElectricWireController.Update () [0x000b4] in <6a01347f98174dbdb41cb4a4eedf5af7>:0
2022-08-06T00:29:51 16954.366 INF Time: 281.17m FPS: 25.40 Heap: 6832.5MB Max: 6862.3MB Chunks: 243 CGO: 167 Ply: 2 Zom: 0 Ent: 2 (71) Items: 0 CO: 1 RSS: 5423.2MB
Hope this helps!
It occurs for both of us.
Until it's fixed is there a way to disable the debug console altogether so it doesn't pop up in the meantime?