php – no_rest_route error on {custom} routes

I am making an attempt to arrange a {custom} endpoint.

I have been following https://developer.wordpress.org/rest-api/extending-the-rest-api/adding-custom-endpoints/ however I can not get the path to register.

Under is my code.

<?php
        
 add_action('rest_api_init', 'register_plugin_routes');
    
 perform register_plugin_routes()
 {
    
        register_rest_route( 'mchs/v1', '/take a look at',
            [
                'methods'   => 'GET',
                'callback'  => 'mchs_test'
            ]
        );
    
        register_rest_route( 'mchs/v1', '/search/?P<search_email>S+',
            [
                'methods'   => ['GET','POST'],
                'callback'  => 'mchs_search_by_email',
                'args'      => [
                    'search_email'  => [
                        'validate_callback' => function( $param, $request, $key ) {
                            return is_email( $param );
                        }
                    ]
                ]
            ]
        );
    }
    
    perform mchs_search_by_email( WP_REST_Request $request )
    {
        $param = $request->get_param('search_email');
    
        return search_hubspot( $param );
    }
    
    perform mchs_test ( WP_REST_REQUEST $request )
    {
        return "This can be a take a look at.";
    }

The route I am making an attempt to entry is http://web site.take a look at/wp-json/mchs/v1/search/john@instance.com

Utilizing http://web site.take a look at/wp-json/mchs/v1/search?search_email=john@instance.com does not work both.

There isn’t any indication of why something is failing, all I get in response is

{
  "code": "rest_no_route",
  "message": "No route was discovered matching the URL and request methodology.",
  "information": {
    "standing": 404
  }
}

I do know the script is loading as a result of I can name http://web site.take a look at/wp-json/mchs/v1/take a look at and get a profitable response.

What’s flawed with my name to register_rest_route() ? Is it the best way I am making an attempt to entry it?