When opening a combinator from inside blueprint sandboxes, an error occurs:

The mod Graph Logs (1.0.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event graph_logs::on_gui_opened (ID 102)
__graph_logs__/control.lua:600: attempt to index local 'sensor' (a nil value)
stack traceback:
    __graph_logs__/control.lua:600: in function <__graph_logs__/control.lua:570>

Hi, thanks for reporting both issues. I have looked at the code, but I have no idea why is the internal sensor model not created as it should be. I also do not know what are these Blueprint Sandboxes and Editor Mode. Nor I have touched Factorio since the release of this mod - it was something I always use for my playthroughs and decided to release it for other people ^^' Saying that, I'm willing to fix that if someone finds the issue.

Editor mode is the vanilla /editor command

I will try looking at the code later to see what's wrong