Why doesn't the image gallery work in Opencart 1.5.6?

Question

PHP

When you open an image gallery in Opencart, they simply don't show up.
When you try to upload an image in the gallery, only its name is displayed, but 0kb is written. If you go to the folder via FTP, then it is there.
Name in lower case in Latin letters. I use Denver.
What could be the problem?

Answer 1

Well look at the console, request headers. There can be a huge number of reasons.
The gallery is pretty messy, by the way.

Answer 2

This is due to Denver + perhaps the parser module (if you installed it).
Not all Denver modifications support some OpenCart ExtJS gadgets.
Try hosting.