Error when trying to access site

im getting this error when i start the bench and trying to load the site

Traceback (most recent call last):
07:35:35 web.1 | File “/usr/lib/python2.7/SocketServer.py”, line 596, in process_request_thread
07:35:35 web.1 | self.finish_request(request, client_address)
07:35:35 web.1 | File “/usr/lib/python2.7/SocketServer.py”, line 331, in finish_request
07:35:35 web.1 | self.RequestHandlerClass(request, client_address, self)
07:35:35 web.1 | File “/usr/lib/python2.7/SocketServer.py”, line 652, in init
07:35:35 web.1 | self.handle()
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/serving.py”, line 232, in handle
07:35:35 web.1 | rv = BaseHTTPRequestHandler.handle(self)
07:35:35 web.1 | File “/usr/lib/python2.7/BaseHTTPServer.py”, line 340, in handle
07:35:35 web.1 | self.handle_one_request()
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/serving.py”, line 267, in handle_one_request
07:35:35 web.1 | return self.run_wsgi()
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/serving.py”, line 209, in run_wsgi
07:35:35 web.1 | execute(self.server.app)
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/serving.py”, line 199, in execute
07:35:35 web.1 | for data in application_iter:
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/debug/init.py”, line 284, in debug_application
07:35:35 web.1 | app_iter = self.app(environ, start_response)
07:35:35 web.1 | File “/home/frappe/lite/apps/frappe/frappe/middlewares.py”, line 15, in call
07:35:35 web.1 | return super(StaticDataMiddleware, self).call(environ, start_response)
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/wsgi.py”, line 600, in call
07:35:35 web.1 | return self.app(environ, start_response)
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/wsgi.py”, line 600, in call
07:35:35 web.1 | return self.app(environ, start_response)
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/local.py”, line 228, in application
07:35:35 web.1 | return ClosingIterator(app(environ, start_response), self.cleanup)
07:35:35 web.1 | File “/home/frappe/lite/env/local/lib/python2.7/site-packages/werkzeug/wrappers.py”, line 301, in application
07:35:35 web.1 | return f(*args[:-2] + (request,))(*args[-2:])
07:35:35 web.1 | File “/home/frappe/lite/apps/frappe/frappe/app.py”, line 52, in application
07:35:35 web.1 | init_request(request)
07:35:35 web.1 | File “/home/frappe/lite/apps/frappe/frappe/app.py”, line 103, in init_request
07:35:35 web.1 | frappe.init(site=site, sites_path=_sites_path)
07:35:35 web.1 | File “/home/frappe/lite/apps/frappe/frappe/init.py”, line 134, in init
07:35:35 web.1 | local.conf = _dict(get_site_config())
07:35:35 web.1 | File “/home/frappe/lite/apps/frappe/frappe/init.py”, line 189, in get_site_config
07:35:35 web.1 | sys.exit(1)
07:35:35 web.1 | SystemExit: 1

Your sites/[sitename]/site_config.json does not seem correctly formatted