Hi again,
error log looks like this:
Object of class stdClass could not be converted to string
/var/www/vhosts/httpdocs/..../templates/shaper_helix3/sppagebuilder/addons/image_content/site.php:35
Call stack
Function Location
1 () JROOT/templates/shaper_helix3/sppagebuilder/addons/image_content/site.php:35
2 SppagebuilderAddonImage_content->render() JROOT/components/com_sppagebuilder/parser/addon-parser.php:445
3 AddonParser::getAddonHtmlView() JROOT/components/com_sppagebuilder/parser/addon-parser.php:292
4 AddonParser::viewAddons() JROOT/components/com_sppagebuilder/views/page/tmpl/default.php:91
5 include() JROOT/libraries/src/MVC/View/HtmlView.php:701
6 Joomla\CMS\MVC\View\HtmlView->loadTemplate() JROOT/libraries/src/MVC/View/HtmlView.php:230
7 Joomla\CMS\MVC\View\HtmlView->display() JROOT/components/com_sppagebuilder/views/page/view.html.php:43
8 SppagebuilderViewPage->display() JROOT/libraries/src/MVC/Controller/BaseController.php:672
9 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/components/com_sppagebuilder/controller.php:68
10 SppagebuilderController->display() JROOT/libraries/src/MVC/Controller/BaseController.php:710
11 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/components/com_sppagebuilder/sppagebuilder.php:20
12 require_once() JROOT/libraries/src/Component/ComponentHelper.php:402
13 Joomla\CMS\Component\ComponentHelper::executeComponent() JROOT/libraries/src/Component/ComponentHelper.php:377
14 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:194
15 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:233
16 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:203
17 Joomla\CMS\Application\CMSApplication->execute() JROOT/index.php:49