For HTTPS protocol is with security features, all have some HTTPS protocol is unable to catch, so need to set filler, to use filler way to crawl to HTTPS request packet, then how to use filler to crawl to the request packet.
To open the computer's installed filler software, click on the Menu "Tools" option menu.
This will pop up the menu in the drop-down menu to select the option "Fiddler option".
This will go into the Options window of the Fiddler options, and click on the "HTTPS" option in the menu.
This will go directly to the HTTPS option and tick the option decrypt HTTPS traffic.
This will pop up a scary text ahead:read carefully to click Yes.
This will pop up a message with a security warning prompt and you can click "Yes" directly.
Then after accessing an HTTPS Web site, you can be caught on HTTPS, the request for HTTPS analysis protocol.
Fiddler How to crawl HTTPS request packets