ekorip On some pictures, I dont have thumbnails.
This is likely because of very large image dimensions, because there are some mechanisms in place to protect your server from attempting to resize image sizes beyond capabilities and/or to prevent slow performance. What dimensions are the images?
You may need to increase the values of config options image_resize_memory_limit and image_resize_max_pixels. For the
image_resize_memory_limit option, this will depend on your server and default memory, and if it's safe to increase the memory usage.
'image_resize_memory_limit' => 512, // 512MB
'image_resize_max_pixels' => 100000000, // supports up to 10000 x 10000