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I created a registration form using make:auth command in Laravel 5.5. Its working alright but not showing errors when validation fails. I've checked many times that code to display errors exists in template but still getting this error.

Template Location:

resources/views/mybladetemplate

Method in Controller:

protected function validator(array $data)
string

RegistersUsers Trait:

public function register(Request $request)

 $this->validator($request->all())->validate();

 event(new Registered($user = $this->create($request->all())));

 $this->guard()->login($user);

 return $this->registered($request, $user)
 ?: redirect($this->redirectPath());

Registeration Form:

<form class="form-horizontal" method="POST" action=" route('register') ">
 csrf_field() 

 <div class="form-group $errors->has('field1') ? ' has-error' : '' ">
 <label for="name" class="col-md-4 control-label">Field Name</label>

 <div class="col-md-6">
 <input id="field1" type="text" class="form-control" name="field" value=" old('field1') " required autofocus>
 @if ($errors->has('field1'))
 <span class="help-block">
 <strong> $errors->first('field1') </strong>
 </span>
 @endif
 </div>
 </div>

 <div class="form-group $errors->has('emailField') ? ' has-error' : '' ">
 <label for="email" class="col-md-4 control-label">E-Mail Address</label>

 <div class="col-md-6">
 <input id="emailField" type="email" class="form-control" name="emailField" value=" old('emailField') " required>

 @if ($errors->has('emailField'))
 <span class="help-block">
 <strong> $errors->first('emailField') </strong>
 </span>
 @endif
 </div>
 </div>

 <div class="form-group">
 <label for="anotherfield" class="col-md-4 control-label">Another Field</label>

 <div class="col-md-6">
 <input id="anotherfield" type="text" class="form-control" name="anotherfield" value=" old('anotherfield') " />
 </div>
 </div>

 <div class="form-group $errors->has('fieldPwd') ? ' has-error' : '' ">
 <label for="fieldPwd" class="col-md-4 control-label">Password</label>

 <div class="col-md-6">
 <input id="fieldPwd" type="password" class="form-control" name="fieldPwd" required>

 @if ($errors->has('fieldPwd'))
 <span class="help-block">
 <strong> $errors->first('fieldPwd') </strong>
 </span>
 @endif
 </div>
 </div>

 <div class="form-group">
 <label for="password-confirm" class="col-md-4 control-label">Confirm Password</label>

 <div class="col-md-6">
 <input id="password-confirm" type="password" class="form-control" name="password_confirmation" required>
 </div>
 </div>

 <div class="form-group">
 <div class="col-md-6 col-md-offset-4">
 <button type="submit" class="btn btn-primary">
 Register
 </button>
 </div>
 </div>
 </form>

Use this simple code in your blade to show all of the errors in a ul li structure :

 @if($errors->any())
 @foreach ($errors->all() as $error)
 <div class="alert alert-warning" dir="rtl">
 <ul>
 <li>!! $error !!</li>
 </ul>
 </div>
 @endforeach
 @endif