Error on order update discount_breakdown

[SebastianBotez]

Hello guys, Looks like there is still a problem on tax breakdown using Lunar 0.8.
The error occurs when this code is executed:

$order->update([
    'discount_breakdown' => $discountBreakdown,
]);

Object of class stdClass could not be converted to string

Any ideea how to fix it?

Originally posted by @SebastianBotez in #887 (comment)

[alecritson]

My initial thought is this appeared due changes in how the breakdown data is structured in the database. Are you able to confirm if this is still a problem you're facing?