The problem seems to be with the heated bed and its temperature reading.
The issue is likely with the thermistor. Double check all of your connections to the MOSFET, check the connection of the thermistor (white cable from the heated bed) to the board.
Also make sure that you have some cable relief for the when the platform is sliding back and forth the cable should not be moving at it's connection point to the bed, rather at the point where it is cable tied to the platform, further up.
I found the thermistor cable terminal looks like this that'a why the connection is unstable because of machine moves.
So I had to put something into it, the terminal should be like underneath one.
The problem seems to be with the heated bed and its temperature reading.
The issue is likely with the thermistor. Double check all of your connections to the MOSFET, check the connection of the thermistor (white cable from the heated bed) to the board.
Also make sure that you have some cable relief for the when the platform is sliding back and forth the cable should not be moving at it's connection point to the bed, rather at the point where it is cable tied to the platform, further up.