Why do KDE Wallet Service keeps asking for password after changing user password?

Question

I recently changes my user password using the command passwd, and then after I restarted the system and logged in using my newly set password, I started getting the annoying popups asking me to insert my KDE Wallet Service password, also my Wifi password was gone, and this popup showed every time I started Google Chrome, I tried both my old and current password, however non would seem to work, the only way I was able to get rid of the annoying popups in by reverting to my old password!

How can I solve this issue and change my user login password?

I have Kubuntu 17.10 64-bit.

Solution

So I was able to get rid of the popups, however this has a side affect. Note that if you use this solution that you will lose any saved password in the system, e.g. Wifi, Google Chrome users,...etc. however you can always save them again.

Solution: delete, rename or move KDE Wallet Service folder which will create automatically a new fresh wallet

mv ~/.local/share/kwalletd ~/.local/share/kwalletd.old