The error you're encountering, "Cannot read properties of undefined (reading 'version')", suggests that the M.get().version is returning undefined. This typically happens when the Inertia version is not being set correctly in your application.
Here are a few steps you can take to troubleshoot and potentially resolve this issue:
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Check Inertia Middleware: Ensure that your server-side Inertia middleware is correctly setting the Inertia version. In a Laravel application, this is usually done in the
HandleInertiaRequestsmiddleware. Make sure theversionmethod is returning a valid version string.use Inertia\Middleware; class HandleInertiaRequests extends Middleware { // ... public function version(Request $request) { return parent::version($request) ?? md5_file(public_path('mix-manifest.json')); } }If you're using a different backend, ensure that the version is being set similarly.
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Check Asset Versioning: If you're using asset versioning (e.g., with Laravel Mix), ensure that your
mix-manifest.jsonfile is present and correctly configured in thepublicdirectory. This file is used to determine the current version of your assets. -
Verify Inertia Setup: Double-check your Inertia setup to ensure that the client-side and server-side configurations are correct. Make sure that the Inertia library is properly initialized in your JavaScript code.
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Environment Differences: Since the issue only occurs in production, there might be differences in your environment configuration. Check for any discrepancies between your development and production environments, such as different versions of dependencies or missing environment variables.
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Debugging: Add some debugging statements to log the value of
M.get().versionbefore it's used. This can help you determine if the value is indeedundefinedand why. -
Update Dependencies: Ensure that all your dependencies are up to date. Sometimes, bugs are fixed in newer versions of libraries. Run
npm updateoryarn upgradeto update your JavaScript dependencies.
If none of these steps resolve the issue, consider creating a minimal reproducible example and posting it on the Laracasts forum or GitHub issues for further assistance. This will help others understand the context and provide more targeted help.