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(1/1) InvalidArgumentException

Service "site.controller" is not callable.

in CallbackResolver.php (line 59)
at CallbackResolver->convertCallback('site.controller:ofertaAction')in ServiceControllerResolver.php (line 50)
at ServiceControllerResolver->getController(object(Request))in HttpKernel.php (line 136)
at HttpKernel->handleRaw(object(Request), 1)in HttpKernel.php (line 68)
at HttpKernel->handle(object(Request), 1, true)in Application.php (line 496)
at Application->handle(object(Request))in Application.php (line 477)
at Application->run()in index.php (line 47)