Crash on MacOS Mojave

[avellable]

$ rabbit --type uri https://raw.github.com/rabbit-shocker/rabbit/master/sample/rabbit-implementation.rd
Assertion failed: (s->stack->next != NULL), function CGGStackRestore, file /BuildRoot/Library/Caches/com.apple.xbs/Sources/CoreGraphics/CoreGraphics-1265.9/CoreGraphics/Context/CGGStack.c, line 77.
[1]    17931 abort      rabbit --type uri 

Ruby version

$ ruby --version
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-darwin18]

Rabbit version

$ rabbit --version
3.0.0

OS generated bug report: https://gist.github.com/avellable/5a6fea47495d6da71175503b6576555a

Please guide me. Thank you!

[kou]

It's reproduced on local.
I'll look at this.