I'm trying to run the Arrows plugin on QGIS 2.10 (Win 8.1), but I'm getting an error message:
Traceback (most recent call last): File "C:/.../.qgis2/python/plugins\arrows\arrows.py", line 79, in run_set self.draw_arrows() File "C:/U.../.qgis2/python/plugins\arrows\arrows.py", line 128, in draw_arrows width = attributes[self.conf["arrow_width_field"]] * float(unicode(self.conf["arrow_width_factor"])) TypeError: unsupported operand type(s) for *: 'QPyNullVariant' and 'float'
Can anyone help me out with this? What is going wrong? How can I fix it?