Warning of charger put not letting me charge my phone

[fizzy124]

This is what it saying when I'm trying to plug in the charger into my s20 phone how do I fix this solution I've tried drying it with and dryer still the same 

[AM4N]

Use a dry tooth brush and gently clean the charging port, even a grain of salt can trigger the sensor 👍🏽

[Members_Q0vTClX]

I can't charge it for a few days, can anyone help?