That screen shot cuts off the diagnostic just when it gets to the useful part. So I have no concrete suggestion.
Try building again with the option --verbose_diagnostics. Then look at the resulting diagnostic in the Console view, not the Problems view you show above. You'll see the full text of the diagnostic, along with an echo of the source line that causes it, and a hint about where on the line the error begins. That may make things clear. If not, copy-n-paste the entire diagnostic into your next post.
Thanks and regards,
-George