Pinterest API search not working anymore

I was looking for pinterest API endpoints...

I've founded some URL..

https://api.pinterest.com/v3/domains/<domains>/search/pins/?query=<query>&access_token=<access_token>

I was able to generate the access_token..but every time I've tried a POST on that URL it gave me:

{  
    "status":"failure",
    "code":12,
    "host":"ngapi2-b2fc674c",
    "generated_at":"Mon, 09 Feb 2015 17:45:29 +0000",
    "message":"Something went wrong on our end. Sorry about that.",
    "data":"path: /v3/domains/www.vtracker.com.br/search/pins/\nparams:
            [('access_token', [u'blablahblahblah']), ('query', 
            [u'como'])]\nTraceback (most recent call last):\n  File 
            \"/mnt/virtualenv/local/lib/python2.7/site-packages/flask/app.py\", 
            line 1504, in wsgi_app\n    response = 
            self.full_dispatch_request()\n  File 
            \"/mnt/virtualenv/local/lib/python2.7/site-packages/flask/app.py\", 
            line 1264, in full_dispatch_request\n    rv = 
            self.handle_user_exception(e)\n  File 
            \"/mnt/virtualenv/local/lib/python2.7/site-packages/flask/app.py\", 
            line 1262, in full_dispatch_request\n    rv = 
            self.dispatch_request()\n  File 
            \"/mnt/virtualenv/local/lib/python2.7/site-packages/flask/app.py\", 
            line 1248, in dispatch_request\n    return 
            self.view_functions[rule.endpoint](**req.view_args)\n  File 
            \"../api/pin_api.py\", line 715, in __call__\n    
            self._perform_auth()\n  File \"../api/pin_api.py\", line 848, in 
            _perform_auth\n    authorization.perform(dictified_values, 
            request.cookies, request.headers)\n  File \"../api/pin_api.py\", 
            line 271, in perform\n    params, cookies, headers)\n  File 
            \"../api/pin_api.py\", line 121, in perform\n    headers=headers)\n  
            File \"../api/decorators.py\", line 212, in 
            verify_user_authorization\n    
            core.Consumer.manager.get_scope_as_int(required_scope)):\n  File 
            \"../core/managers/consumer_manager.py\", line 479, in 
            check_scope\n    scope = migrate_legacy_scope(scope)\n  File 
            \"../core/managers/consumer_manager.py\", line 475, in 
            migrate_legacy_scope\n    if ~scope & old == 0:\nTypeError: bad 
            operand type for unary ~: 'NoneType'\n"
}

Is Pinterest API v3 closed or some other problem is going on?

Thks