Drupal 7.x

When I try to install any module I get this error:

Fatal error: Call to undefined function menu_get_object() in /includes/theme.inc on line 2580

The code in question: https://i.imgur.com/7oqHqKH.jpg

I've tried the following:

1. Clearing all caches
2. Uninstalling recently installed modules

I ran a backtrace on the line right before it and this is the result:

I added:

I am using hybridauth module for social login with php7 as fcgi and php-event (for compatibility with http/2 protocol), ubuntu 16.04.

I'm having trouble migrating a new client's site from D7 to D8.

I have already articulated the issue in detail on StackExchange, but as I haven't received any insight yet, I want to speed things up with a bounty.

Here's the original post: https://stackoverflow.com/questions/49089615/how-can-i-fix-these-errors-...

So I installed Drupal 7.57 because I couldn't find any up to date instructions for installing the current version 8.

I'm working on some legacy code to get this Drupal 7 project to run on php7.1. I'm cleaning up some queries to use db_query() to sanitize input and there are some queries that just will not pass in their values. This is an example of one that I cannot see what I'm doing wrong.

echo $currentroleids;

2,3,8,40⏎

gettype ($currentroleids);

String

I have two fields in a content type. The first is a list of the site's registered users (user entity reference), the second is a textarea. I would want to ensure only referenced user can enter some value into the text in edit mode. Is there a module for this or custome code to achieve this?

The field permission module doesn't suit this as it only support permission for node creation and not editing. Thanks