Wanderlust: Step 13. Safari browser console error. "Unexpected identifier 'fetch'. Expected ':' after variable declaration."

Hi.
I keep getting the same error in my safari browser console “unexpected identifier ‘fetch’. Expected ‘:’ after variable declaration.”
I can’t seem to figure out the issue to resolve the problem.
Any help appreciated.
Cheers

![Screen Shot 2020-06-02 at 3.32.54 PM|578x500](upload://3wQ8f5kpPRj75bjAnrIvIxoAFSV.png)