Draft: Fix _param_observer_callback_scalemultiplier error

Fixes #17741.
2024-11-08 16:08:40 +01:00
parent 854ce9e0b8
commit 3a7c8ed1c5
1 changed files with 4 additions and 1 deletions
--- a/src/Mod/Draft/draftutils/params.py
+++ b/src/Mod/Draft/draftutils/params.py
@@ -90,7 +90,10 @@ def _param_observer_callback_tray():


 def _param_observer_callback_scalemultiplier(value):
-    value = float(value)  # value is a string
+    # value is a string.
+    if not value:
+        return
+    value = float(value)
    if value <= 0:
        return
    mw = Gui.getMainWindow()