1. Not using the built-in WP_Http class or related helper methods (wp_remote_get) that provide headers, timeouts, useragent, auth, etc.
2. Unserialising remote, untrusted PHP objects (!) (Why does Vimeo provide/encourage this?)
3. Not handling HTTP error response codes.
4. PHP errors are not hidden from users.
I see nothing in the error message to show that this is the case, what am I missing?
a:1:{i:0;a:23:{s:2:"id";i:466939644;s:5:"title";s:17:"Cognifirm intro 3";s:11:"description";s:0:"";s:3:"url";s:27:"https://vimeo.com/466939644";s:11:"upload_date";s:19:"2020-10-10 16:14:03";s:15:"thumbnail_small";s:49:"https://i.vimeocdn.com/video/972928988_100x75.jpg";s:16:"thumbnail_medium";s:50:"https://i.vimeocdn.com/video/972928988_200x150.jpg";s:15:"thumbnail_large";s:46:"https://i.vimeocdn.com/video/972928988_640.jpg";s:7:"user_id";i:112487323;s:9:"user_name";s:12:"Per Damgaard";s:8:"user_url";s:31:"https://vimeo.com/user112487323";s:19:"user_portrait_small";s:55:"https://i.vimeocdn.com/portrait/defaults-blue_30x30.png";s:20:"user_portrait_medium";s:55:"https://i.vimeocdn.com/portrait/defaults-blue_75x75.png";s:19:"user_portrait_large";s:57:"https://i.vimeocdn.com/portrait/defaults-blue_100x100.png";s:18:"user_portrait_huge";s:57:"https://i.vimeocdn.com/portrait/defaults-blue_300x300.png";s:21:"stats_number_of_likes";i:0;s:21:"stats_number_of_plays";i:111;s:24:"stats_number_of_comments";i:0;s:8:"duration";i:109;s:5:"width";i:1920;s:6:"height";i:1080;s:4:"tags";s:0:"";s:13:"embed_privacy";s:8:"anywhere";}}
This is perhaps the strangest API design I've ever seen and these data could have easily been returned and parsed as JSON.