My account suddenly logs out when i click save changes in my edit.blade.php

When i click save changes this error appears TokenMismatchException in VerifyCsrfToken.php line 68: then returns to the login page and i cant login anymore, it just returns back to login page.

This is my edit.blade.php for user

@extends('layouts.main')
@section('stylesheet')
<link href="{{ asset('DataTables-1.10.13/media/css/dataTables.bootstrap.min.css') }}" rel="stylesheet" type="text/css">
<style>
.row{
  padding-bottom: 5px;
}
</style>
@stop
@section('content')
<div id="page-wrapper"> 
  <div class="container-fluid">
    <div class="row"> 
      <ol class="breadcrumb">
      </ol>
    </div>
    
    <div class="row">
        <div class="panel panel-default">
          <div class="panel-heading">
            <h4> Login Credentials </h4>
          </div>
          <div class="panel-body">
              <div class="row">
              <form data-toggle="validator" method="POST" action="{{ route('members.update', $user->id) }}">
              {{ csrf_field() }}
              {{ method_field('PATCH') }}
                 <div class="form-group{{ $errors->has('username') ? ' has-error ' : ''}}">
                    <label class="col-lg-2 control-label">Username</label>
                    <div class="col-lg-4">
                        <input type="text" class="form-control" name="username" id="username" value="{{ $user->username }}" required readonly>
                        @if ($errors->has('username'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('username') }}</strong>
                                    </span>
                        @endif
                    </div>
                </div> 
            </div>
          </div>
        </div>
    </div>
    <div class="row">
        <div class="panel panel-default">
          <div class="panel-heading">
            <h4> Personal Information </h4>
            
          </div>
          <div class="panel-body">
                 
            <div class="row">
                 <div class="form-group{{ $errors->has('firstname') ? ' has-error ' : ''}}">
                    <label class="col-lg-2 control-label">First Name</label>
                    <div class="col-lg-4">
                        <input type="text" class="form-control" name="firstname" id="firstname" value={{$user->firstname}} required autofocus>
                        @if ($errors->has('firstname'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('firstname') }}</strong>
                                    </span>
                        @endif
                    </div>
                    <label class="col-lg-2 control-label">Middle Name</label>
                    <div class="col-lg-4">
                        <input type="text" class="form-control" name="middlename" id="middlename" value = "{{$user->middlename}}" autofocus>
                    </div>
                  </div>
            </div>
            <div class="row">
                 <div class="form-group">
                    <label class="col-lg-2 control-label{{ $errors->has('lastname') ? ' has-error ' : ''}}">Last Name</label>
                    <div class="col-lg-4">
                        <input type="text" class="form-control" name="lastname" id="lastname" value = "{{$user->lastname}}" required autofocus>
                         @if ($errors->has('lastname'))
                                    <span class="help-block">
                                        <strong>{{ $errors->first('lastname') }}</strong>
                                    </span>
                        @endif
                    </div>
                    <label class="col-lg-2 control-label">Ext Name</label>
                    <div class="col-lg-4">
                        <Select class="form-control" name="ext_name" id="ext_name" autofocus>
                          <option value="" @if($user->ext_name =="") selected @endif></option>
                          <option value="Jr" @if($user->ext_name =="Jr") selected @endif >Jr</option>
                          <option value="Sr" @if($user->ext_name =="Sr") selected @endif>Sr</option>
                          <option value="I" @if($user->ext_name =="I") selected @endif>I</option>
                          <option value="II" @if($user->ext_name =="II") selected @endif>II</option>
                          <option value="III" @if($user->ext_name =="III") selected @endif>III</option>
                          <option value="IV" @if($user->ext_name =="IV") selected @endif>IV</option>
                          <option value="V" @if($user->ext_name =="V") selected @endif>V</option>
                          <option value="VI" @if($user->ext_name =="VI") selected @endif>VI</option>
                        </Select>
                    </div>
                  </div>
            </div> 
            <div class="row">
                 <div class="form-group">
                    <label class="col-lg-2 control-label">Status</label>
                    <div class="col-lg-4">
                        <Select class="form-control" name="item_status" id="item_status" required autofocus>
                          <option value=""></option>
                          @foreach($item_status as $status)
                          @if($user->item_status == $status->id)
                            <option value = "{{$status->id}}" selected>{{$status->description}}</option>
                          @else
                            <option value = "{{$status->id}}">{{$status->description}}</option>
                          @endif
                        @endforeach
                        </Select>
                    </div> 
                    <label class="col-lg-2 control-label">Membership Type</label>
                    <div class="col-lg-4">
                         <Select class="form-control" name="membership_type" id="membership_type" required autofocus>
                        <option value=""></option>
                        @foreach($membership as $membership_type)
                          @if($user->membership_type == $membership_type->id)
                            <option value = "{{$membership_type->id}}" selected>{{$membership_type->membership_type}}</option>
                          @else
                            <option value = "{{$membership_type->id}}">{{$membership_type->membership_type}}</option>
                          @endif
                        @endforeach
                        </Select>
                    </div>     
                </div>
            </div> 
            <div class="row">
                 <div class="form-group">
                    
                    <label class="col-lg-2 control-label">Project</label>
                    <div class="col-lg-4">
                        <Select class="form-control" name="project" id="project" required autofocus>
                        <option value=""></option>
                        @foreach($projects as $project)
                          @if($user->project == $project->id)
                            <option value = "{{$project->id}}" selected>{{$project->project}}</option>
                          @else
                            <option value = "{{$project->id}}">{{$project->project}}</option>
                          @endif
                        @endforeach
                        </Select>
                    </div> 
                    <label class="col-lg-2 control-label">Access Level</label>
                    <div class="col-lg-4">
                        <Select class="form-control" name="roles" id="roles" required autofocus>
                        <option value=""></option>
                        @foreach($roles as $role)
                          @if($user->roles == $role->id)
                            <option value = "{{$role->id}}" selected>{{ $role->description }}</option>
                          @else
                            <option value = "{{$role->id}}">{{ $role->description }}</option>
                          @endif
                        @endforeach
                        </Select>
                    </div> 
                </div>
            </div>
            <div class="row">
                 <div class="form-group">
                    
                    <label class="col-lg-2 control-label">Email Address</label>
                    <div class="col-lg-4">
                        <input type="email" class="form-control" name="email" id="email" value = "{{$user->email}}" autofocus>
                    </div> 
                    <label class="col-lg-2 control-label">Account Status</label>
                    <div class="col-lg-4">
                        <Select class="form-control" name="status" id="status" required autofocus>
                        <option value="0" @if($user->status == 0) selected @endif>Pending</option>
                        <option value="1" @if($user->status == 1) selected @endif>Active</option>
                        <option value="2" @if($user->status == 2) selected @endif>Deactivated</option>
                        </Select>
                    </div>   
                </div>
            </div>   
            <div class="row">
                <div class="form-group">
                    <label class="col-lg-2 control-label">Address</label>
                    <div class="col-lg-10">
                        <textarea type="text" rows="3" class="form-control" name="address" id="address" autofocus>{{$user->address}}</textarea>
                    </div>
                    
                </div>
            </div>   
          <div class="row">
                <div class="col-xs-4 col-md-4">
                    <input type="submit" name ="btnSave" value="Save Changes" class="btn btn-success btn-block btn-md"> 
                </div>
          </div>  
          
          </div><!-- end panel body -->
        </div><!--end panel-->
      </div>
      </form>
    </div>     
   </div>
   <!-- /#page-wrapper -->
    
@endsection

@section('scripts')
<script src="{{ asset('DataTables-1.10.13/media/js/jquery.dataTables.min.js') }}"></script>
<script src="{{ asset('DataTables-1.10.13/media/js/dataTables.bootstrap.min.js') }}"></script>

@stop

Then i cant login anymore until i delete all in my session.php