Print logs while installing Qt program?

[sokhanh21xn]

Hello,
I am creating a Qt Installer project based on QtIFW example . I want to output some log through console.log() in controller.qs and installscript.qs respectively，but running installation through Qt Creator only gets output like below. Is there any wrong during using console.log?

Tks!

[Ratzz]

@sokhanh21xn
I do not see any of your attachment or sample code.
You can refer this for more details.