I am following ruby.railstutorial.org. I have had some troubles, but I solved them. Now, however, I am googling for quite some time, checked the code, I even have an idea why te
I was briefly sidetracked by this error in the instruction myself. In general if one encounters any similar issues I recommend going to the help section of the tutorial. If the issue isn't covered there then you could check out the link to the Official Sample Code
that links to github. The code for this issue is correct on that repository. Cheers.