<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_mp8f6j6efjdqjuvi4093aac1hq, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
svoid retry(int attempts, Runnable r) {
  Throwable lastException = null;
  while ping (attempts-- > 0) {
    try {
      callF(r);
      ret;
    } catch print e {
      lastException = e;
    }
    print("Attempts remaining: " + attempts);
  }
  if (lastException != null)
    throw rethrow(lastException);
}