Surge Protector Error Lights

[Pauly]

Have a 30amp system, have a power hook-up for home storage coming from a garage sub-panel, surge protector has been all good lights until today when the "power on neutral" warning light was indicating a problem. Put a meter on it and 1.9 volts were on the neutral wire (124 v on the hot line). I spent hours researching for comments on continuing or not in plugging in the trailer with that error, but no luck. Saw a video of a user having the same red warning light on the same unit but said user commented "looks good". Spent some time looking for the source of the voltage leak in the garage to the neutral line, but it never went fully neutral. Is this just a case of being able to put a bunch of tests in a surge protector with some that don't matter, or is a trace of voltage on the neutral line not an issue when attached to the trailer 30amp hookup. Thanks for any help that can be provided.