AudiSport-Ibérica Club

Are you using a cron job for the tasks? If yes, did you recently switch to php8 without updating the path to the php binary? 

You would need to speak to your hosting company if you are unsure on how to correctly alter the cron job set up to point to the correct PHP version. This is something set up on your server

Solved. Only needed to delete browser Cache.

In your theme templates, edit mobileNavBar and before the closing </ul> add something like:
<li>{template="mobileNavigationIcon" app="core" group="global" params=""}</li>

On my site I did the following:
1. I removed a code for template "mobileNavigationIcon" from a global template.
2. Template "mobileNavBar" I edited by adding a hamburger menu code, before </ul>, or now total code this template is:
<ul id='elMobileNav' class='ipsResponsive_hideDesktop' data-controller='core.front.core.mobileNav'> {{if \count( \IPS\Output::i()->breadcrumb )}} {{if \count( \IPS\Output::i()->breadcrumb ) == 1}} <li id='elMobileBreadcrumb'> <a href='{setting="base_url"}'> <span>{lang="home"}</span> </a> </li> {{else}} {{$i = 0;}} {{foreach \IPS\Output::i()->breadcrumb as $k => $b}} {{if $i + 2 == \count( \IPS\Output::i()->breadcrumb )}} <li id='elMobileBreadcrumb'> <a href='{$b[0]}'> <span>{$b[1]}</span> </a> </li> {{endif}} {{$i++;}} {{endforeach}} {{endif}} {{endif}} {{$defaultStream = \IPS\core\Stream::defaultStream();}} <li {{if !\IPS\Member::loggedIn()->canAccessModule( \IPS\Application\Module::get( 'core', 'discover' ) ) }}class='ipsHide'{{endif}}> <a data-action="defaultStream" href='{{if $defaultStream}}{$defaultStream->url()}{{else}}{url="app=core&module=discover&controller=streams" seoTemplate="discover_all"}{{endif}}' title="streams"><i class="fa fa-newspaper-o" aria-hidden="true"></i></a> </li> {{if !\IPS\Member::loggedIn()->restrict_post and \count( \IPS\Member::loggedIn()->createMenu() )}} <li data-ipsDrawer data-ipsDrawer-drawerElem='#elMobileCreateMenuDrawer'> <a href='#'><i class='fa fa-plus'></i></a> </li> {{endif}} {{if \IPS\Member::loggedIn()->canAccessModule( \IPS\Application\Module::get( 'core', 'search' ) )}} <li class='ipsJS_show'> <a href='{url="app=core&module=search&controller=search" seoTemplate="search"}' title="search"><i class='fa fa-search'></i></a> </li> {{endif}} <li data-ipsDrawer data-ipsDrawer-drawerElem='#elMobileDrawer'> <a href='#' title="navigation"> {{$total = \IPS\Member::loggedIn()->notification_cnt;}} {{if !\IPS\Member::loggedIn()->members_disable_pm and \IPS\Member::loggedIn()->canAccessModule( \IPS\Application\Module::get( 'core', 'messaging' ) )}} {{$total += \IPS\Member::loggedIn()->msg_count_new;}} {{endif}} {{if \IPS\Member::loggedIn()->canAccessModule( \IPS\Application\Module::get( 'core', 'modcp' ) ) and \IPS\Member::loggedIn()->modPermission('can_view_reports')}} {{$total += \IPS\Member::loggedIn()->reportCount();}} {{endif}} {{if $total}} <span class='ipsNotificationCount' data-notificationType='total'>{$total}</span> {{endif}} <i class='fa fa-navicon'></i> </a> </li> </ul>
3. Result