How can developers troubleshoot errors related to class namespaces in PHP?

When troubleshooting errors related to class namespaces in PHP, developers should ensure that the namespace declaration at the beginning of the file matches the actual directory structure of the file. They should also check for typos or incorrect namespace references within the code. Additionally, using the `use` keyword to import namespaces can help resolve namespace-related errors. 

// Incorrect namespace declaration
namespace App\Models;

class User {
    // Class implementation
}

// Correct namespace declaration
namespace App\Models;

class User {
    // Class implementation
}

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namespace PHP class troubleshooting errors

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