title: Error in new.session() : Could not establish session after 5 attempts
body: <p>I've been facing in R the error message for days using <code>getSymbols</code> of the <code>quantmod</code> package:</p>
  <pre><code>Error in new.session() : Could not establish session after 5 attempts.
  </code></pre>
  <pre><code>getSymbols(tick, from = date_from,  to = date_to, warnings = FALSE, auto.assign = TRUE)
  </code></pre>
  <p>The same issue applies to:</p>
  <pre><code>getSymbols(tick, from = date_from,  to = date_to, warnings = FALSE, auto.assign = TRUE, src=&quot;yahoo&quot;)
  </code></pre>