ThinkPHP prompts "Module does not exist" is one of the common errors in the development process. This error is usually caused by the following situations:

1. The module path is incorrect: ThinkPHP's default module path is "/application/". If your module is not in this path, it will prompt "Module does not exist". At this time, you need to modify the module path and set the module path in the entry file, as shown below:

//?定義應(yīng)用目錄
define('APP_PATH',?__DIR__?.?'/custom_application/');

//?加載框架引導(dǎo)文件
require?__DIR__?.?'/thinkphp/start.php';

2. Incorrect module naming: ThinkPHP’s default module naming rule is " Capitalize CamelCase". If your module name does not comply with the specification, it will also prompt "Module does not exist". At this point, you need to modify the name of the module to maintain the correct naming rules.
3. Module does not exist: If you do not create the corresponding module, ThinkPHP will prompt "Module does not exist". At this time, you need to create a corresponding module and register the module in the entry file, as shown below:

//?注冊(cè)模塊
\think\App::module('admin',?APP_PATH?.?'admin/');

4. Incomplete module copy: If you copy a module, but If the copy is not complete, it may prompt "Module does not exist". At this time, you need to check the copy status of the module to ensure that the module files are complete.

To sum up, if the "module does not exist" error occurs, it needs to be investigated according to the specific situation. Usually, this problem can be solved by modifying the module path, modifying the module name, registering the module, etc.

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