Login via API error

[Karl_T]

register ajax code

$email = $sanitizer->email($input->post->email);
if($email){
  $emailUser = $users->get("email=$email");
  if (!$emailUser->id) {
    $password = $input->post->password;
    if (strlen($_POST["password"]) < 8) {
      return "length";
    }
    $firstname = $sanitizer->text($input->post->firstname);
    $lastname = $sanitizer->text($input->post->lastname);
    $u = new User();
    $u->name = $firstname.$lastname.uniqid();
    $u->email = $email;
    $u->pass = $input->post->password;
    $u->firstName = $firstname;
    $u->lastName = $lastname;
    if($u->save()){
      return "success";
    }
  } else {
    return "duplicate";
  }
}else{
 return "invalidemail";
}

login ajax code

$email = $sanitizer->email($input->post->email);
if($email){
    $emailUser = $users->get("email=$email"); //user login with email address
    if ($emailUser->id) {
    	$u = $session->login($emailUser->name, $input->post->password);
        if ($u) {
            $user = $u;
            return "success";
        } else {
            return "fail";
        }
    } else {
        return "fail";
    }
}

 

After users register an account and login with the above code, I get the follow error when executing the login ajax code.

 

Notice: Trying to get property of non-object in /var/app/current/wire/core/PagesEditor.php on line 251 
Notice: Trying to get property of non-object in /var/app/current/wire/core/PagesEditor.php on line 254 
Notice: Trying to get property of non-object in /var/app/current/wire/core/PagesEditor.php on line 263 
Notice: Trying to get property of non-object in /var/app/current/site/assets/cache/FileCompiler/site/modules/ProcessSetupPageName/ProcessSetupPageName.module on line 258 
Notice: Trying to get property of non-object in /var/app/current/site/assets/cache/FileCompiler/site/modules/ProcessSetupPageName/ProcessSetupPageName.module on line 258 
Notice: Trying to get property of non-object in /var/app/current/site/assets/cache/FileCompiler/site/modules/ProcessSetupPageName/ProcessSetupPageName.module on line 289 

Fatal error: Uncaught Error: Call to a member function numChildren() on null in /var/app/current/wire/core/PagesEditor.php:270 Stack trace: 
#0 /var/app/current/wire/core/Pages.php(788): ProcessWire\PagesEditor->setupNew(Object(ProcessWire\NullPage)) 
#1 /var/app/current/wire/core/Wire.php(383): ProcessWire\Pages->___setupNew(Object(ProcessWire\NullPage))
#2 /var/app/current/wire/core/WireHooks.php(698): ProcessWire\Wire->_callMethod('___setupNew', Array) 
#3 /var/app/current/wire/core/Wire.php(442): ProcessWire\WireHooks->runHooks(Object(ProcessWire\Pages), 'setupNew', Array) 
#4 /var/app/current/wire/core/PagesEditor.php(465): ProcessWire\Wire->__call('setupNew', Array) 
#5 /var/app/current/wire/core/Pages.php(410): ProcessWire\PagesEditor->save(Object(ProcessWire\NullPage), Array) 
#6 /var/app/current/wire/core/Wire.php(386): ProcessWire\Pages->___save(Object(ProcessWire\NullPage), Array) 
#7 /var/app/current/wire/core/WireHooks.php(698): ProcessWire\Wire->_callMethod('___save', Array) 
#8 /var/app/current/wire/core/Wire.php(4 in /var/app/current/wire/core/PagesEditor.php on line 270 Error: Uncaught Error: Call to a member function numChildren() on null in /var/app/current/wire/core/PagesEditor.php:270 

I have no idea why this is happening. The account is newly created from the register code with no error. After the error show, the account is actually logged in after a page reload. That means the $session->login is getting the correct arguments. The error messages do not show the exact line of code which fires the error.

I use the same login to log in my superuser without error. The error occurs only when the user is newly created by the above code or by the admin panel.

I can only find this similar case https://processwire.com/talk/topic/15204-cannot-login-errors-wirecorepageseditorphp/, but it seems not the same case.

Any thoughts? Thanks in advance.

[Karl_T]

Sorry this is my own fault. The issue arouse because I have written a hook to 'login',  editing some pages that do not exist in new account.