Webapp gives `Sorry, unexpected error: 'wallpaper_url'` on clicking the building button

[pranav1698]

I'm submitting a ... (check one with "x")

• [x] bug report
• [ ] feature request
• [ ] support request => Please do not submit support requests here, instead ask your query in out Gitter channel at https://gitter.im/fossasia/meilix

Actual Behaviour The current meilix generator webapp generates a unexpected error: Sorry, unexpected error: 'wallpaper_url'

Expected Behaviour We should not get this error

Steps to reproduce it

• Enter the email and the name of ditribution
• Click on the build button

Related code:

Sorry, unexpected error: 'wallpaper_url'

Other information:

System information:

Your operating system

Would you like to work on the issue? Yes

[xeon-zolt]

its good that we are covering edge cases too