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On a Laravel application, I get the following error message



<pre class="wp-block-preformatted">The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths.
</pre>



<figure class="wp-block-image"><img loading="lazy" decoding="async" width="1203" height="239" src="https://backend.serverok.in/wp-content/uploads/2022/05/laravel-ciphers-key-length.webp" alt="Laravel error" class="wp-image-9904" srcset="https://backend.serverok.in/wp-content/uploads/2022/05/laravel-ciphers-key-length.webp 1203w, https://backend.serverok.in/wp-content/uploads/2022/05/laravel-ciphers-key-length-300x60.webp 300w, https://backend.serverok.in/wp-content/uploads/2022/05/laravel-ciphers-key-length-1024x203.webp 1024w, https://backend.serverok.in/wp-content/uploads/2022/05/laravel-ciphers-key-length-768x153.webp 768w" sizes="auto, (max-width: 1203px) 100vw, 1203px" /></figure>







To fix the error, run the command



<pre class="wp-block-code"><code class="">php artisan key:generate</code></pre>



This will generate a new key and add to the .env file.



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Laravel supported ciphers are AES-128-CBC and AES-256-CBC