Error when try to reorder subtasks

Question

When I try to move UP or Down my subtasks I'm getting this below error. Could anyone suggest a resolution for this?

"The jira server could not be contacted. this may be a temporary glitch or the server may be down"

Jay36 · Answer

Hey Alexey, let me check this.. thank you for your time!

Alexey_Rjeutski__Polontech_ · Answer

It looks like a server error during execution of request. Please check atlassian-jira.log file inside %datafolder%/log direcrory. there should be exception that will give more info