PHP 8.1 Deprecated function : strip_tags():

@yom, try to call strip_tags() method after checking NULL may fix the issue.

$tooltip = isset($entity) && !empty($tooltip_field) ? $this->rendered_fields[$id][$tooltip_field] ?? NULL : NULL;

if ($tooltip !== NULL) {
    $tooltip = trim(html_entity_decode(strip_tags($tooltip), ENT_QUOTES));
}

@yom , fixed the issue and created Patch.please kindly review it

Thank you very much ! The patch works like a charm :)

thanks. Patch #4 committed into dev, will be part of the next Geofield Map release.

Automatically closed - issue fixed for 2 weeks with no activity.