JLoader::import('com_tz_portfolio_plus.libraries.helper.modulehelper', JPATH_ADMINISTRATOR.'/components');
JLoader::import('com_tz_portfolio_plus.libraries.helper.modulehelper', JPATH_ADMINISTRATOR.'/components');
Sorry, same error-message.
Changed the file but still get the error.
It seems that the problem is caused by the Addon "Media Type - Image".
Im using Joomla 3.8.3, TZ Portfolio+ 1.2.2. with PHP 7.0.22
Best Regards
didi