throw new ClientException(_m('Event must have an end time.'));
}
- if (isset($this->url) && Validate::uri($this->url) === false) {
+ if (!empty($this->url) && Validate::uri($this->url) === false) {
// TRANS: Client exception thrown when trying to post an event with an invalid URL.
throw new ClientException(_m('URL must be valid.'));
}