What is this error in RStudio: "breakpoints will be activated when the file or function is finished executing"?

Question

I am trying to set a break point inside a function from a package I wrote. I am unsuccessful when clicking next to the line number in Rstudio, the error message looks like:

I am not executing anything. Reloading the package did not help either. What is this error and what can I do about it?

Answer 1

Check out this documentation from RStudio that explains what to do.

Basically, make sure you save your R file, then click the Source button on the toolbar:

Your breakpoint should then turn from a hollow red circle to a full one.