</span></div></div></div></div><div class="qm-api-collapsible-content"><div class="qm-api-item-content"><div class="qm-api-description"><div class="qm-html-paragraph">The error to show to the user. If no error exists, the return value should be an empty string. </div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><div class="qm-api-group qm-api-event-group"><div class="qm-api-group-header qm-api-event-group-header qm-header-font">Events</div><div class=