Just remove the dot here my friend, after the word “photos”. See if that works. And maybe add a space after the <!-- and before the --> in case it doesn’t. The best way is to simply copy paste the text if it demands you to write a text. They’re mostly case sensitives, etc. So you have to put the right words in most cases
Try deleting the entire line of code for that step and start anew. Apply all the proper spaces and see what will happen. And also, can you post what the error is hinting to you