I removed this mod: https://mods.factorio.com/mod/PowerPlusPowerMeter

I did have two status panels hooked up to the virtual signals it provided; now, just after loading the game I get this failure. I assume that some check that the virtual signal still exists on startup would be the solution here, and reset the display panels to "no signal" or something.

The mod Integrated Circuitry (0.18.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event integratedCircuitry::on_tick (ID 0)
Unknown virtual-signal name: power-meter-secondary-capacity
stack traceback:
    __integratedCircuitry__/control/status-panel.lua:230: in function 'tick'
    __integratedCircuitry__/libs/control/entities.lua:212: in function 'entities_tick'
    __integratedCircuitry__/control.lua:57: in function <__integratedCircuitry__/control.lua:56>
stack traceback:
    [C]: in function 'get_signal'
    __integratedCircuitry__/control/status-panel.lua:230: in function 'tick'
    __integratedCircuitry__/libs/control/entities.lua:212: in function 'entities_tick'
    __integratedCircuitry__/control.lua:57: in function <__integratedCircuitry__/control.lua:56>