Reported error Thermal Runaway, system stopped! Heater ID 0 Printer halted kill called! E3D

Overnight my printer crashed with a thermal runaway. I've had this issue many times. Different things cause a hotend thermal runaway.

1. First Check to see if you are getting temps from the Thermistor
2. Make sure the thermistor and heater cartridge are tight in the heater block
2. Check the thermistor connector at the hotend and make sure its not loose (Your printer might not have one)
3. Check the connections and the mainboard
4. Grab a multimeter and start testing the wires going from the hotend to the main board. This is the most difficult to troubleshoot because its usually intermittent. Move the hotend around and check for breaks in the wires.

E3D Thermistorhttps://www.amazon.com/gp/product/B072HNL9MR/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B072HNL9MR&linkId=33d108987d27d8f13012d5a54e8e5231

Beside Multimeter I use
https://www.amazon.com/gp/product/B07P7V3YNT/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B07P7V3YNT&linkId=204fe9d487aab3409d1d721d0d9a49af

My Multimeter Stand on Thingiverse
https://www.thingiverse.com/thing:4504933