Core version compatibility issue
On console:
composer require 'drupal/views_photo_grid:^2.0'; drush cr;
Remove line:5 core: 8.x from views_photo_grid.info.yml
core: 8.x
Fixed
2.0
Code
There is already a merge request for this issue, applying this patch:
Thank you. Merged and released as this might be critical.
Automatically closed - issue fixed for 2 weeks with no activity.