MembershipClassesTable.php

<?php
namespace App\Model\Table;

use Cake\ORM\Table;
use Cake\Validation\Validator;
use Cake\Model\Behavior\TreeBehavior;

class MembershipClassesTable extends AppTable {

	public function initialize(array $config){
        parent::initialize($config);
        $this->displayField('name');

        //Associations
        $this->belongsTo('Affiliates');
        $this->belongsToMany('Roles', [
            'through'=>'MembershipClassesRoles',
            'join_table'=>'membership_classes_roles',
            'foreignKey' => 'membership_class_id',
            'targetForeignKey' => 'role_id',
        ]);
        $this->hasMany('PrestigeLogsMembershipClasses', [
            'dependant' => true,
            'cascadeCallbacks' => true,
            'foreignKey' => 'membership_class_id',
        ]);
	}
}

PrestigeLogsController.php

<?php
debug($this->PrestigeLogs->PrestigeLogsMembershipClasses->MembershipClasses);

Table "Cake\ORM\Table" is not associated with "MembershipClasses"
Please try correcting the issue for the following table aliases:
PrestigeLogsMembershipClasses

PrestigeLogsMembershipClasses.php

<?php
namespace App\Model\Table;

use Cake\ORM\Table;
use Cake\ORM\RulesChecker;
use Cake\Validation\Validator;

class PrestigeLogsMembershipClassesTable extends AppTable {

	public function initialize(array $config){
        parent::initialize($config);

        $this->belongsTo('PrestigeLogs');
        $this->belongsTo('MembershipClasses');
        $this->belongsTo('Officers', [
            'className' => 'Members',
            'foreignKey' => 'officer_id',
        ]);
	}
}