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"No response data available for this request" unless HAR saved #2878

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opened 2026年02月22日 21:47:27 +01:00 by krystalgamer · 2 comments

LibreWolf Version

147.0.4-1

Operating System

Windows 11

Installation Source / Package

Windows Installer (.exe)

Description

I was analyzing the traffic of a website and one of the requests had the "Transferred" and "Size" columns empty. If I save the HAR and import it then I can see it, the "Transferred" is set to "-1 B" while the "Size" is the correct one in bytes. I also checked with Edge and Fiddler HTTP Proxy and they showed the data correctly. This was a chunked response by the way.

If "Persist Logs" is disabled then this is the very last request before the logs are cleared. Could it be a race condition within persist logs?

Logs / Screenshots

No response

### LibreWolf Version 147.0.4-1 ### Operating System Windows 11 ### Installation Source / Package Windows Installer (.exe) ### Description I was analyzing the traffic of a website and one of the requests had the "Transferred" and "Size" columns empty. If I save the HAR and import it then I can see it, the "Transferred" is set to "-1 B" while the "Size" is the correct one in bytes. I also checked with Edge and Fiddler HTTP Proxy and they showed the data correctly. This was a chunked response by the way. If "Persist Logs" is disabled then this is the very last request before the logs are cleared. Could it be a race condition within persist logs? ### Logs / Screenshots _No response_

Can you reproduce this on Firefox?
Are you sure the file is question is not cached?

Can you share the website I question and a example HAR?
So we can try to reproduce this.

Can you reproduce this on Firefox? Are you sure the file is question is not cached? Can you share the website I question and a example HAR? So we can try to reproduce this.

I'll try with Firefox this weekend. By the way I got the idea of saving to HAR and reload thanks to a comment here: https://stackoverflow.com/questions/78328562/network-tab-is-not-showing-any-data-in-firefox-how-to-fix

Sorry cannot share the website since it's not public. Regardless if I stumbled upon this again I'll surely update the thread :)

I'll try with Firefox this weekend. By the way I got the idea of saving to HAR and reload thanks to a comment here: https://stackoverflow.com/questions/78328562/network-tab-is-not-showing-any-data-in-firefox-how-to-fix Sorry cannot share the website since it's not public. Regardless if I stumbled upon this again I'll surely update the thread :)
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