Laravel 5.2 MongoDB & MySQL in Same App Error - php

Question

I have a MongoDB connection & MySQL Connection details setup in my config/database.php file. I can connect to the MongoDB Details and get a response but when i try connect to the MySQL database, i get the following error:
FatalThrowableError in Builder.php line 1514:
Call to a member function compileSelect() on null
I've tried the solutions from this page:
Issue with Out of the box Laravel Authentication but none of the solutions have worked.
I'm not using any authentication on the app, just querying a MySQL database to return data.
[Updated]
Route link from app/Http/routes.php
Route::get('v1/{showdata}/{name}', 'ShowDataController#percentData');
Controller: ShowDataController.php
namespace App\Http\Controllers;
use App\ShowData;
use App\MongoDataPull;
class ShowDataController extends BaseController
{
public function percentData($showdata, $name)
{
$showdata;
$name;
$signupsremaining = 0;
//Percentage Calculator
if ((ShowData::where('name', '=', $name)->first()) === null) {
// If not found, change status to Not Listed
$percentagetakeup = 'Not Listed';
} else {
// If found, Run Percentage Calculator
$totalrequired = ShowData::select('total_required')->where('name', '=', $name)->value('total_required');
$currentinterest = ShowData::select('current_interest')->where('name', '=', $name)->value('current_interest');
$percentagetakeup = round((($currentinterest) / $totalrequired) * 100);
// Calcualte the number of signups remaining for the fibrehood.
$signupsremaining = $totalrequired - ($currentinterest);
if ($signupsremaining < 0) {
$signupsremaining = 0;
} else {
$signupsremaining = $signupsremaining;
}
}
return ['percentagetakeup' => $percentagetakeup, 'signupsremaining' => $signupsremaining];
}
}
From ShowData Model ShowData.php
namespace App;
use Illuminate\Database\Eloquent\Model;
class ShowData extends Model
{
protected $table='qualify';
protected $fillable=[
'id',
'name',
'total_required',
'current_interest',
'status'
];
}