How to access static file on Google app engine in PHP?

[Maulik Kanani via StackOverflow]

I have set up CodeIgniter project on Google cloud. it working with https://tootfairytest-166211.appspot.com/ but Static files like CSS and JS give me 404 not found errors.

Would you please refer http://prntscr.com/f7zkd1 ?

I have also checked public directory already there with all js and CSS.

Would you please refer http://prntscr.com/f7zkp5 ?

Would you please help me to get it worked correctly?

Sorry but I'm a bit new with google cloud.

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