Ok be serious ( excuse the lingo nothing aimed at you)
Sounds like nonsense , something loose inside shorted the power?
What's the setup any pictures of what's inside the panel ?
Have you tried powering down whole panel , disconnect mains and disconnect battery in panel and restart?
Or you meant painter struck viper with brush full of water because he washing it and it went flying towards the viper
Come on we ain't got all day get typing man or woman