Woah, hold on a second. What’s going on there on the first 317 lines of code? If there is anything up there, and I assume there is, you’ll need to move the import line (318) all the way to the top of your code. Imports need to be the first things that happen in the code.
Also, (my bad) I forgot to mention that you need to change the .url on line 322 to the field key of the column in your collection that contains the URLs. Looks from your screenshots that it might be .links .