Concrete5 Short-term Whoops/ ErrorException immediate fix, then Long-term Partner
First, we need that fixed on Version 8.5.4. I can provide more robust details, of course.
Second, we need the backend overhauled to ensure we aren't courting future PHP 7 disaster.
Third, we would like to discuss a longer-term retainer relationship, if appropriate, to further refine the site's code. Currently the client is satisfied with the design.