diff -r aa713ac50c0d -r cc717c2ae956 eric6/Tools/TRPreviewer.py
--- a/eric6/Tools/TRPreviewer.py Thu Apr 15 16:52:05 2021 +0200
+++ b/eric6/Tools/TRPreviewer.py Thu Apr 15 18:11:24 2021 +0200
@@ -823,12 +823,10 @@
@return flag indicating if event was filtered out
"""
if obj in self.widgets and ev.type() == QEvent.Type.Close:
- try:
+ with contextlib.suppress(ValueError):
self.widgets.remove(obj)
if len(self.widgets) == 0:
self.lastWidgetClosed.emit()
- except ValueError:
- pass
return QMdiArea.eventFilter(self, obj, ev)
