'Unexpected token: "NEWLINE"' (in a line which has been commented out)

Help & Support
1

I’m receiving

In asdf.cr:206:9

 206 | #foo= SomeModule.bar @asdf, qwer, uiop
       ^
Error: unexpected token: "NEWLINE"

If relevant: the line is within a method, but not within any other block.

And I have no clue why this happens, what the compiler is trying to tell me, or where to start trying to solve this

EDIT:
Somewhat unexpected: if I add a newline before, then the error also follows (so compiler still complains about the line which is commented out, and not about the new, obvious empty line, directly above it)

EDIT2:
It was a missing ) dozens of lines earlier (which I only found by counting ( and ), because luckily my last changes involved a lot of those so I had there some suspicion).