Broken icons after upgrading Font awesome version to version 5x

Updating font awesome dependency on reference application (RA-1387) broke some icons

Before Update

After Update

I need pointers on how to remedy this.

The broken icons have class names that are not defined in version 5x. There is also the possibilities of old icon classes being updated such that they are no longer appropriate for where they’ve been used (I haven’t found one, however).

Can you do a pull request such that i play with it a bit?

Here’s the link to the pull request