Blog-plugin: "Method name must be a string" error updating to newest version (12.14)

[CptMeatball]

Build: 382
Version: 1..2.14

After upgrading to the newest version the front-end implementation throws error shown in the screenshot below:

[CptMeatball]

Result of custom partial:

Apparently this doesn't work anymore since the newest builds of OctoberCMS:

<img src="{{ post.featured_images.1.path }}" width=100% />

should be:

<img src="{{ post.featured_images[1].path }}" width=100% />