Its looks like the problem is with the temperature,
The hot end is too hot so you need to cool it down. Please try to try the next tips for better result:
Tip #1: Check the material settings
This might seem obvious, but just double check that you’ve given the printer the correct details about the material. The latest filament temperatures range from between 180 – 260ºC or thereabout, so it’s surprising how easy it is to get this wrong.
Tip #2: Decrease the hot end temperature
In the printer or software settings decrease the hot end temperature. Depending on the severity of the overheating, drop the temperature in 5ºC intervals.
Tip #3: Speed up the print
If the filament isn’t being discoloured then you could try speeding up the print speed.
Tip #4: Check the fans
Check that the cooling fans are directed at the hot end. Check that they’re in the right position and if possible boost their speed to increase airflow over the cooling filament.
Best of Luck,