matlab.gra​phics.cont​rols.toolb​arcontroll​er

error in matlab.graphics.controls.toolbarcontroller

[Steven Lord]

Without more information (like the full and exact text of the error message and a clear description of what you were doing when you received that error and/or the code you were running when the error occurred) it's going to be difficult or impossible to offer any concrete guidance about how to resolve that error.