I used to have this problem every 6 months or so on my old Note 9 noteultra. Once, it was cured by a simple reboot but mostly it just needed a gentle warming of the charging point by my Wife's hair dryer or even just leaving the phone in a warm dry place for up to 48 hours or so. Yours in it's second day of this problem now mate so I would try a reboot first and then apply gentle heat to the port if you can as I suggested. This problem is never a permanent one and I am sure your phone will be back to normal in no time noteultra. Good luck to you. 👍