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    <p>TL;DR You'll just need to generate your proxy classes manually</p> <pre><code>vendor/bin/doctrine orm:generate-proxies </code></pre> <p>Doctrine uses Proxies to connect the to database. Proxies are generated from the the Entity classes.</p> <p>In development mode, it generates a Proxies on every request because you could make changes to Entity classes.</p> <p>In production mode, it does not generate Proxies every time. For performance reason, it assumes the Proxies exist and include them directly.</p> <p>There are a few mode for Proxies generation:</p> <ol> <li>ALWAYS - It alwayes generates Proxies, this is the default setting for development mode</li> <li>NEVER - It never generates Proxies, this is the default setting for production mode</li> <li>ON_DEMAND - It only generates the Proxies if the Proxy files do not exist. The drawback of this option is that it has to call file_exists() every time which could potentially cause a performance issue.</li> </ol> <p>Now the command </p> <pre><code>vendor/bin/doctrine orm:generate-proxies </code></pre> <p>generates Proxy classes to /tmp. I would say this might still cause trouble because other applications on your server might delete these files unexpectedlly. One option is you can change your /tmp directory access permission to 1777</p> <pre><code>sudo chmod 1777 /tmp </code></pre> <p>The stricky bit '1' in front of 777 means that, although everyone can read/write to the /tmp directory, but you can only operate on your own files. i.e. You can't remove files created by other users.</p> <p>For further reading, please have a look at <a href="http://docs.doctrine-project.org/en/latest/reference/advanced-configuration.html#auto-generating-proxy-classes-optional" rel="noreferrer">http://docs.doctrine-project.org/en/latest/reference/advanced-configuration.html#auto-generating-proxy-classes-optional</a></p> <p>You can also set the Proxies directory to somewhere else so no other applications can modify them. <a href="http://docs.doctrine-project.org/en/latest/reference/advanced-configuration.html#autoloading-proxies" rel="noreferrer">http://docs.doctrine-project.org/en/latest/reference/advanced-configuration.html#autoloading-proxies</a></p>
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    1. COThanks, this is the right answer. (I don't have enough reputation yet to vote up.)
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    2. CONo worries mate :)
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