I have downloaded a file from Thingiverse and when I try to print the file on my Anet A8 printer as soon as the print head starts to print the extruder temps drops back to 0. This is only happening on new prints I am trying to print. I can load an older file and it prints with no issues at all. I am using the Cura slicer and Tinkercad and I have no idea what the issue is. Any ideas would be greatly appreciated.

Thanks