Exporting Jira audit logs returns a 504 Gateway Time-out Error when audit events are huge in size.

Issue Summary

Exporting Jira audit logs returns a 504 Gateway Time-out error when audit events are huge in size. However, if the Jira audit events are small in size then it is working.

Steps to Reproduce

1. Step 1 - Login to Jira Instance > Settings > System > Audit Log > Export 
2. Step 2 - When the Export Audit log button https://site.atlassian.net/auditing/export is triggered, all the present audit logs stored are exported, not only the filtered records in the https://site.atlassian.net/auditing/view page. When the Audit Events are huge in size, it is failing with 504 Gateway Timeout Error

Expected Results

Exporting of Audit logs should be successful without any issues.

Actual Results

When the audit events are huge, then it fails with 504 Gateway Timeout Error and it is visible on the UI.

Workaround

Here is the KB article to fetch the audit records using the Python script - https://confluence.atlassian.com/display/JIRAKB/Python+Script+to+fetch+the+Jira+audit+log+data+in+CSV+format