Block icon gives PHP Warning

HI there,

I'm using an icon with a certain foreground color in a custom MB Block. This, however, gives the following PHP Warning in my error log:
PHP Warning: strpos() expects parameter 1 to be string, array given in ***/plugins/meta-box-aio/vendor/meta-box/mb-blocks/src/MetaBox.php on line 149

This is the code I use to get the icon right:

'icon' => [
  'src' => ' fas fa-car',
  'foreground' => '#4ab098',
],

And this works, but the piece of code that searches for the fontawesome tag assumes the value of 'icon' is always a string when in fact it can also be an array.

Can this be fixed?

Regards,
Jasper