Button without icon

[Rotolo74]

Hi everyone ,
I happened to add a button in a toolbar
and the button icon didn't appear but a balloon with a
question mark inside ... What could it be ?
Is there a folder that contains all the button icons?
Thank you
HI

[pawmal]

Hi, the question is whether you added your own icon or from the library of available icons? Try checking with a different icon.

[Rotolo74]

Yes yes, I dragged it from the bottom left box to the toolbar, but the icon that you see did not come out

[Rotolo74]

With most of the features, the icons are visible but some are not. Also "Angle Bisector Line " is not visible and I get bubble with question mark