I am trying to create a line feature from my point data (using the Points to line tool). However, the points to line tool returns an error prompt with only an exclamation point (no error message whatsoever). I also noticed in the points to line tool, beside "Input Features", there's a red 'X' icon instead of the usual green dot. I am using ArcGIS Desktop 10.5.
Below are screen shots of this issue.