ConfiguringurlrulesinYii2.0causescaptchaimagenottoappear.Howtosolvethisissue?

What is the reason that configuring url rules in Yii2.0 causes captcha image not to appear? How can we resolve this problem? The reason that configuring url rules in Yii2.0 causes captcha image not to appear is that the url rules are rewriting the captcha route, leading to the incorrect path being used for the captcha image. To solve this issue, we can add an exclusion for the captcha route in the url rules configuration using the "except" property. For example:

'urlManager' => [ 'enablePrettyUrl' => true, 'showScriptName' => false, 'rules' => [ [ 'pattern' => 'captcha/<v:\w+>/refresh', 'route' => 'site/captcha', 'suffix' => '.html', 'except' => ['site/captcha'], ], // other rules... ], ],

By adding "'except' => ['site/captcha']" to the captcha route configuration, Yii2.0 engine will bypass the url rules for this specific route, allowing the captcha image to be displayed correctly.