pThumb on different contexts

Hi,

I have my main website running on the 'web' context and a blog running on a 'blog' context.
pThumb created images show perfectly on the 'web' context but will not show on the 'blog' context pages.

The error log is as follows:
[2018-03-18 18:11:27] (ERROR @ /home/stream7/public_html/core/components/phpthumbof/model/phpthumbof.class.php : 156) [pThumb] Resource: 156 || Image: (none) [pThumb remote images] Failed to cache http://stream7.co.uk/assets/images/blog/2017.jpg

I'm guessing I need to add some Context settings to the 'blog' but I cannot find which settings to add.

Thanks,

try reducing the image to 120 by 120 pixels. It should be displayed later

I'm not sure that reducing the image size will cause the image to not cache?

The error is indicating

[pThumb remote images]

could this be due to the fact that the images are stored on the main www.stream7.co.uk domain the the blog context is on blog.stream7.co.uk?

Any ideas?