Class 'craft\\commerce\\controllers\\Plugin' not found (develop branch)

[echantigny]

Description

I'm currently testing the dev-develop branch for the persistant cart addition. Unfortunately, I'm running into an issue adding items to my cart with AJAX now, the exact same way I always did, which works with the latest release too.

Posting these to the root of my site:

action: commerce/cart/update-cart
purchasableId: 547 (any item does the same)

The response I get is {"error":"Class 'craft\\commerce\\controllers\\Plugin' not found"}

If I look at the cart after, the item is in there.

Additional info

• Craft version: Craft Pro 3.1.25
• PHP version: 7.2.4
• Database driver & version: MySQL 5.7.21
• Plugins & versions:

Cookies 1.1.11
Craft Commerce dev-develop (f4fe1f7)
Element API 2.5.4
Feed Me 4.1.0
Many to Many Field Type dev-master
Redactor 2.3.3.2

[echantigny]

@brandonkelly @lukeholder
This is still true on 2.1.5. There is a breaking change somewhere in there.