dump annotation error - constructing empty shapely linestring

I'm getting this error when I try to dump my annotations:

Can not dump annotations for the task. Code: 500. Message: "cvat.apps.engine.utils.InterpreterError: ValueError at line 90: LineStrings must have at least 2 coordinate tuples\n"

strange thing is my annotations only have points, no polylines, so not sure why linestrings are being made. I'm a bit worried that I won't be able to export my work, that it will be lost.