Error generated from running example 14-3

[EmbraceLife]

I run codes on Macbook pro early 2015, macOS Catalina 10.15.1, Processing 3.5.4.

When I run code on example 14-3, although the graph seemed generating ok, I repeated encounting the same error message generated in the console below

0   AppKit                              0x00007fff314a26ef -[NSWindow(NSWindow_Theme) _postWindowNeedsToResetDragMarginsUnlessPostingDisabled] + 371
	1   AppKit                              0x00007fff3149fbc1 -[NSWindow _initContent:styleMask:backing:defer:contentView:] + 1416
	2   AppKit                              0x00007fff3149f633 -[NSWindow initWithContentRect:styleMask:backing:defer:] + 42
	3   libnativewindow_macosx.jnilib       0x00000001292203fe Java_jogamp_nativewindow_macosx_OSXUtil_CreateNSWindow0 + 398
	4   ???                                 0x0000000113e18a88 0x0 + 4628515464
)

Should it be a concern? Thanks