<p><a href="https://github.com/gleide" class="user-mention">@gleide</a> I've encountered the same issue recently when setting up a fresh copy of the Rails app locally. Here are two solutions that you may find useful:</p>
<ul>
<li>Create a blank file at <code>tmp/caching-dev.txt</code>. This will turn on a local in-memory cache store, which will be used to store your user session data.</li>
<li>Install a local <a href="https://memcached.org/">memcache</a> server. Set <code>memcache_servers: [127.0.0.1]</code> in your <code>application.yml</code>.</li>
</ul>
<p><a href="https://github.com/tomhughes" class="user-mention">@tomhughes</a> I've proposed a small improvement that may guard against issues like this in the future. Here it is, in case you and other maintainers think it may be useful: <a href="https://github.com/openstreetmap/openstreetmap-website/pull/1666" class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="270493014" data-permission-text="Issue title is private" data-url="https://github.com/openstreetmap/openstreetmap-website/issues/1666">#1666</a></p>

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