Attached is a screen shot which shows the cursor at line 23 (counting) or 24 (as displayed in the status bar). The SBT compilation tells me that at that line there should be the erroneous "import akka.actor.Directive", which presumably was added while letting content-assist complete the word "Direc" somewhere lower in the file. "Directive" is already imported as you can see, but there seems to be also a problem with auto-importing nested objects. Closing and reopening the editor did fix the problem.