How to debug Bitrix link site using xdebug?

Question

1C-Bitrix

Good day to all!

Tell me how to properly configure the mapping of the remote site of the link (the second site) in Bitrix?

At the moment, I have configured PHPStorm to look for a directory /ext_www/mysite/bitrixin /www/bitrix, I put a break point in /ext_www/mysite/index.phpon the line where it connects /www/bitrix/header.php, it works fine, but after pressing Step into it should fail in /www/bitrix/header.php, but it doesn’t fail, and the session freezes, but in the xdebug logs it says that it is looking for the file correctly :

<response xmlns="urn:debugger_protocol_v1" xmlns:xdebug="https://xdebug.org/dbgp/xdebug" command="step_into" transaction_id="19" status="break" reason="ok"><xdebug:message fil
ename="file:///home/bitrix/www/bitrix/header.php" lineno="1"></xdebug:message></response>