Hello, I am using for some time LayerSlider for my slides everything looked good but now I am seeing that some photos dont show anymore the photos indise the wordpress are still there with no issue at all. The way to fix that is to delete the photo and re-upload it and inserted it inside the slide again. This is really time cosuming cause I have more than 100 slides in my site (https://ecobest.gr/). I am sending you an example (https://ecobest.gr/project/pools/) the photo that is missing is the last one (the 35th) this is where the photo is inside wordpress (https://ecobest.gr/wp-content/uploads/2020/04/35.jpg) this is the problem that show at the inspect panel:
GET https://i1.wp.com/ecobest.gr/wp-content/uploads/2020/04/35.jpg?resize=768%2C432&ssl=1 400
Please try to help me.