title: I can not deploy the program to dev net with anchor
body: <p>I get this error where I run <code>anchor deploy</code>:</p>
  <pre><code>Deploying workspace: http://127.0.0.1:8899
  Upgrade authority: /home/&lt;user&gt;/.config/solana/id.json
  Deploying program &quot;faucet&quot;...
  Program path: /home/&lt;user&gt;/Workspace/&lt;project_path&gt;/target/deploy/xxx.so...
  Error: RPC request error: cluster version query failed: error sending request for url (http://127.0.0.1:8899/): error trying to connect: tcp connect error: Connection refused (os error 111)
  There was a problem deploying: Output { status: ExitStatus(ExitStatus(256)), stdout: &quot;&quot;, stderr: &quot;&quot; }.
  
  </code></pre>
  <p>Before deploying, I have already run the following to change the cluster config in local:</p>
  <pre class="lang-sh prettyprint-override"><code>solana config set --url https://api.devnet.solana.com
  </code></pre>
  <p>How can I solve the problem?</p>