Url重写除一个链接外的工作

This is the url manager code inside config/main.php

'urlManager'=>array(
    'urlFormat' => 'path',
    'showScriptName'=>false,
    'urlSuffix'=>'.html',
    'caseSensitive'=>false,
    'rules'=>array(
        '<controller:\w+>'=>'<controller>/index',
        '<controller:\w+>/<action:\w+>/<id:\w+>'=>'<controller>/<action>',
        '<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
        '<controller:\w+>/<id:\d+>/<title>'=>'<controller>/view',
        '<controller:\w+>/<id:\d+>'=>'<controller>/view',
    ),
),

Locally it works perfectly. It's working in our server too except for urls with controller name as careersVacancies.

This is the error I'm obtaining

Error 404 Unable to resolve the request "careersVacancies/careers".

Error 404 Unable to resolve the request "careersVacancies/index".

Thanks in advance.