not found error! ! !

The CI framework can access other controllers modules normally, but when accessing a certain module, it reports not found!, and the index.php entry of the framework cannot be entered. Please help me! ! ! ! Image description

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The CI framework can access other controllers modules normally, but when accessing a certain module, it reports not found!, and the index.php entry of the framework cannot be entered. Please help me! ! ! ! Image description

404, the resource location pointed to by uri does not exist, check if the configuration is not written correctly