No icons using https

Hello,

I just installed InvoicePlane (v1.5.4, I am going to update to v1.5.5 soon). In http everything works fine, but in https (SSL) my icons doesn’t seem to work (see screenshot). How to solve this?screenshot

In/application/config/config.php Find the setting base_url
Ensure you have entered the full URL with the https:// prefix.

Eg: https://yourdomain.com