Hi @박성민_학해_
does the error occur only when you try to search the Reporter field or any user field? Do you have the Browse Users permission?
Is the Advanced Search (JQL) working as expected?
Can you add the Reporter field to the "normal" Jira search (not in the Queue view but the general issue search)?
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.