I had assumed it was an error due to lack of space but no matter where we try to save it we get the folllowing error:
Traceback (most recent call last): File "C:/PROGRA~1/QGIS3~1.8/apps/qgis/./python/plugins\processing\algs\qgis\Heatmap.py", line 210, in processAlgorithm self.tr('Could not create destination layer')) _core.QgsProcessingException: Could not create destination layer
If the layers are different CRS's (even in a CRS that worked with version 2.16) it runs and saves in the right places but we just get a giant egg shape instead of the nice heatmap we had before. I understand this is due to the meters/degrees difference but still it runs so that's better than the layers which should be in the correct CRS which just error and don't run at all. If its a space issue why do the ones with the different CRS run but the correct ones not?