Title: 504 error during scan
Last modified: January 18, 2020

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# 504 error during scan

 *  [Carl Gross](https://wordpress.org/support/users/carlgross/)
 * (@carlgross)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/504-error-during-scan/)
 * Hello. I’m trying to scan my site using your plugin. About five minutes after
   I start the scan, the browser displays a ‘504 error’ popup message (sorry, no
   screenshot). Once I close that message, the scan seems to continue to run. Yesterday
   I let it run for ~24 hours, and it had made no progress. I then logged out of
   WordPress, and logged back in. When I re-opened your plugin’s admin page, the
   scan was still in-progress. But this time it was actually stepping through each
   of my plugins. After ~10 minutes, the scan completed. But the report was quite
   incomplete. For most plugins, it reported:
 * `The plugin/theme was skipped as it was too large to scan before the server killed
   the process.`
 * [Full report here](https://pastebin.com/MFpiFggX).
 * I tried a new scan today, and the 504 error occurred again.
 * So, thoughts on how to troubleshoot that 504 error message?
 * Thanks.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2F504-error-during-scan%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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 * 0 replies
 * 1 participant
 * Last reply from: [Carl Gross](https://wordpress.org/support/users/carlgross/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/504-error-during-scan/)
 * Status: not resolved