Layer panel missing from LO 2017

Could anyone assist me with this issue please? I cannot ‘see’ the layer panel in Layout although it says it’s there in the Window/Layer drop down menu. I’m running SKP on iMac. Of course I have a deadline looming today!!

Ok, I figured this out and have retrieved the panel, which was hidden from view, by bringing all ‘Window’ views (in LO) to the front. Hope this can help others who come across this issue.