I am working on a shapefile depicting English administrative divisions in QGIS 3.16.15. I began first by using the 'Fix geometries' tool to remove invalid geometries. Then, I used the topology editor to identity several thousand gaps and overlaps between the polygons. I am trying to fix these geometries using v.clean, but no matter what option I select, I continuously get the same string of errors in the log.
Then, the program crashes.