Not an actual resistor. Some high-temp glues can act like a resistor if they are in contact with the metal leads of either the hot end heater or the thermistor.
Use a multimeter, and measure the resistance between one of the thermistor leads and one side of your hot end heating element (whether it's a resistor, nichrome wire or a heating cartridge). If that is >100Mohm, try measuring the other side of the thermistor.
If you have a link to the type of hot end you are using, I might be able to explain it better (using it as the example)?
Use a multimeter, and measure the resistance between one of the thermistor leads and one side of your hot end heating element (whether it's a resistor, nichrome wire or a heating cartridge). If that is >100Mohm, try measuring the other side of the thermistor.
If you have a link to the type of hot end you are using, I might be able to explain it better (using it as the example)?