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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_qj1vmrqr5iaubc2jv11nenmifr, 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 />
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<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 />
static Map<S, S> slackGetChannelIDs(S token) {
  S url = "https://slack.com/api/channels.list";
  Map postData = litmap("token", token);
  S data = doPostWithTimeout(postData, url, slackSetTimeout_get());
  Map map = jsonDecodeMap(data);
  L<Map> channels = cast map.get("channels");
  new Map<S, S> out;
  for (Map c : channels) {
    S id = getString(c, "id");
    S name = getString(c, "name");
    out.put(name, id);
  }
  ret out;
}