MIGX manager thumbnails Help broken img link in grid

Hi
I've taken over a site I'm making updates to and have added media sources to some MIGX tables. The problem is that whilst they still work in the front end and the modal window when adding items. The grid for the migx items displays a broken image icon. I tried various things such as reinstalling MIGX and recreating the TVs and running MODX setup but no luck. The link for the broken imgs in the grid is as follows:

<img src="/connectors/system/phpthumb.php?h=60&src=assets/site-image-uploads/bannerimgs/locations/Telford/dining-L.jpg" alt=""/>

on another site that works this is how it should appear

<img src="/connectors/system/phpthumb.php?h=60&src=carousel-image-part.jpg&wctx=web&source=2" alt=""/>

Where do need to look to correct this?

Other Image TVs on the site seem to work fine with the same Media Sources?

Using Modx Revo 2.2.6

Thanks for any advice.

Solved it! Turned out to be the Version of MIGX. I had to remove it completely and reinstall, as the 2.3.1 version was not updating to 2.3.2 from package management. The file "migxResourceMediaPath.php" did not previously pick up the media source id for some reason.