downgrade to kirby v3

kirby/config/api/routes/auth.php

@@ -70,11 +70,13 @@ return [
 					$user = $auth->login($email, $password, $long);
 				}
 			} else {
-				$mode = match (true) {
-					isset($methods['code']) 		  => 'login',
-					isset($methods['password-reset']) => 'password-reset',
-					default => throw new InvalidArgumentException('Login without password is not enabled')
-				};
+				if (isset($methods['code']) === true) {
+					$mode = 'login';
+				} elseif (isset($methods['password-reset']) === true) {
+					$mode = 'password-reset';
+				} else {
+					throw new InvalidArgumentException('Login without password is not enabled');
+				}
 
 				$status = $auth->createChallenge($email, $long, $mode);
 			}
@@ -85,13 +87,13 @@ return [
 					'status' => 'ok',
 					'user'   => $this->resolve($user)->view('auth')->toArray()
 				];
+			} else {
+				return [
+					'code'      => 200,
+					'status'    => 'ok',
+					'challenge' => $status->challenge()
+				];
 			}
-
-			return [
-				'code'      => 200,
-				'status'    => 'ok',
-				'challenge' => $status->challenge()
-			];
 		}
 	],
 	[
@@ -103,14 +105,4 @@ return [
 			return true;
 		}
 	],
-	[
-		'pattern' => 'auth/ping',
-		'method'  => 'POST',
-		'auth'    => false,
-		'action'  => function () {
-			// refresh the session timeout
-			$this->kirby()->session();
-			return true;
-		}
-	],
 ];