Phantom power spikes

Hi - wanted to see if anyone had the same experience - for the last 3-4 days the app has been reporting large momentary spikes (up to 40-50kW). Strangely it does not show drawing from the grid (as the red graph is showing positive vs negative during the spikes, suggesting export to the grid). There’s nothing in the house that would be drawing this amount of energy. Until 3 days ago we had never had this.

Could it just be a reporting glitch? Have rebooted the inverter several times but still get 4-5 of these per day.

Any ideas or shared experiences welcome!

I do not know why it is doing it but it has got to be a reporting/measurement issue. A house consumption of 50 kW is over 200amps and would likely blow your main house fuse on the incoming DNO supply.