Trying to run some code for embedding a video to see if I can play it seamlessly and getting problems also.
From here Showing videos in OpenFl
line that triggers it is 
// using appendByte, you can play a video embeded as an asset
ns.appendBytes();
src/i/m/a/Main.hx:56: characters 16-32 : Not enough arguments, expected bytes:openfl.utils.ByteArray
Build halted with errors.
Done(1)
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field addRenderer needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field addWindow needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field registerModule needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field removeRenderer needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field removeWindow needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field setPreloader needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field unregisterModule needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field addRenderer needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field addWindow needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field registerModule needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field removeRenderer needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field removeWindow needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field setPreloader needed by lime.app.IModule is missing
C:\HaxeToolkit\haxe\lib\openfl/3,6,1/extern/openfl/display/Stage.hx:135: lines 135-630 : Field unregisterModule needed by lime.app.IModule is missing
May just not be related but found this really odd.