Fluid Templating Error TYPO3 8.4.1 - typo3

Question

I recently set up a new test environment using TYPO3 v 8.4.1
I used the popular FLUID templating tutorial found on typo3buddy.com
I've used this tutorial before on v6 and v7 projects.
My templates breaks (Ooops an error occurred) when I add the following block of code to the my home.html template:
<f:layout name="main_layout" />
<f:section name="content">
</f:section>
So that it now looks like this:
<f:layout name="main_layout" />
<f:section name="content">
<f:format.raw>{content_main}</f:format.raw>
</f:section>
When I use the this tutorial on a v7 install of TYPO3 I do not receive any error and the tempalte includes my layout file just fine.
Has something changed in v8?
TypoScript justincase,
page.10 = FLUIDTEMPLATE
page.10 {
format = html
file = fileadmin/templates/home.html
partialRootPath = fileadmin/templates/partials/
layoutRootPath = fileadmin/templates/layouts/
variables {
content_main < styles.content.get
content_main.select.where = colPos = 0
}

Answer 1

To get a better Output of the Error you should enable the Develop ApplicationContext in the .htaccess:
RewriteCond %{HTTP_HOST} ^local\.domain$
RewriteRule .? - [E=TYPO3_CONTEXT:Development]

Answer 2

You can try to set the config.contentObjectExceptionHandler = 0 in your TS setup. This will display error messages instead of hiding them.
Also make sure to select the Development preset in the Install Tool.
Make sure to switch all settings back to production once you are done debugging.