比如：
Failed to load resource: the server responded with a status of 404 (Not Found)
uikit.min.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
ydy.png:1 Failed to load resource: the server responded with a status of 404 (Not Found)
main.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
custom.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
uikit-icons.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
uikit.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
font.ttf:1 Failed to load resource: the server responded with a status of 404 (Not Found)
ydy.png:1 Failed to load resource: the server responded with a status of 404 (Not Found)
uikit-icons.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found)
123:1 Failed to load resource: the server responded with a status of 404 (Not Found)
main.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
custom.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
uikit.min.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)
第 46 行新增： $params['webRoot'] = App::$base->router->rootPath;
原因： 当关闭DEBUG模式后出现 controller/action 不存在的情况后会抛出 Response 异常，但是没有经过app层导致不会获取到 webRoot 参数，导致 exception.tpl.php 无法接收到 webRoot 参数从而无法获取到样式表。
比如： Failed to load resource: the server responded with a status of 404 (Not Found) uikit.min.css:1 Failed to load resource: the server responded with a status of 404 (Not Found) ydy.png:1 Failed to load resource: the server responded with a status of 404 (Not Found) main.css:1 Failed to load resource: the server responded with a status of 404 (Not Found) custom.css:1 Failed to load resource: the server responded with a status of 404 (Not Found) uikit-icons.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) uikit.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) font.ttf:1 Failed to load resource: the server responded with a status of 404 (Not Found) ydy.png:1 Failed to load resource: the server responded with a status of 404 (Not Found) uikit-icons.min.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) 123:1 Failed to load resource: the server responded with a status of 404 (Not Found) main.css:1 Failed to load resource: the server responded with a status of 404 (Not Found) custom.css:1 Failed to load resource: the server responded with a status of 404 (Not Found) uikit.min.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)