Apple Watch wont charge after turning on (accessory its not supported by Apple Watch)

I have an Apple Watch series 1 38mm sports edition everything seems to work fine but my apple watch wont stay on for long once it turns on it goes to the select language screen and after that it gives me the message "Low Battery To continue connect apple watch to its charger" and i bypass the screen by taking the watch off and on the charger and than it gives me the message " charging with this accessory its not supported by Apple Watch

i have tried to hard reset it and i know its not my charger cables i have two brand new authentic chargers and it gives me the same message on both plus i have also tried to connect it directly to my mac pro

please help i have no idea on what to do now