I'm working in local and I'm always having this error. I also did embed redux via embed in a wordpress plugin.
The fix that I do for now is to comment line 63 for the mean time. Then go to Wordpress Admin and uncomment it again. Similar below
62 $data = wp_remote_get($this->server_file, array('sslverify'=>false));
63 // $data = $data['body'];
64 // if some data exists
65 if ($data != '' || !empty($data)) {
After this everything is working again.
Sorry I really do not have any idea how to fully fix this part for now. I only found a workaround so that I could continue working on my stuff.