Steps to Reproduce:
Click the button to move a category, e.g. https://commons.wikimedia.org/wiki/Category:Pilgrim_images
Actual Results:
After some time, https://commons.wikimedia.org/wiki/Special:MovePage/Category:Pilgrim_images displays an error message:
[XYLPqgpAAEMAAI7crBQAAAAH] 2019-09-19 00:46:30: Fatal exception of type "WMFTimeoutException"
[XYLnOApAIC4AAC@8SSwAAABW] 2019-09-19 02:27:00: Fatal exception of type "WMFTimeoutException"
Expected Results:
Interface for file move should be shown instead.