I need help here!

We have a new theme that are converting to C5: We have one page defined with a single template. We have done this many times in the past except using php 5.6.3 so we are comfortable with what we are doing. Also, we reviewed Andrews HTML to C5 vids and confirmed all of our steps.

We simply added an area and now get the error a above (more details below).

Here is the area (inside of a simple div). We've tried without a class, same error.
<div class="flex-caption">
<?php
$a = new Area(‘Main’);
$a->display($c);
?>
</div>

ENVIRONMENT
=============

# concrete5 Version
Core Version - 8.5.4
Version Installed - 8.5.4
Database Version - 20200609145307

PHP 7.3.7

Complete Error Thrown (can provide the stack trace if needed):
================================================
Whoops\Exception\ErrorException thrown with message "Use of undefined constant ‘Main’ - assumed '‘Main’'
(this will throw an Error in a future version of PHP)"

If we change to PHP 5.6.3 (which is what we've used for eons), we get no error, but when adding a content block, the progress bar goes all the way to the right and the little spinny wheel just keeps going around and around. We can add an HTML, Feature Block and a few others - haven't really tested everything, but a Content Block is obviously a key item.

I would really appreciate any insight or suggestions.

Thanks all and enjoy the rest of the holiday season.