I am in the process of upgrading a site using Teline IV from Joomla 2.5 to 3. As part of this process, I downloaded and upgraded the related JA Newspro module, but receive this error from the module:
Warning: call_user_func() expects parameter 1 to be a valid callback, function ‘imagecreatefrompng’ not found or invalid function name in /var/www/symposium.music.org/htdocs/mmp_upgrade/modules/mod_janewspro/helpers/jaimage.php on line 277
Fatal error: Call to undefined function imagecreate() in /var/www/symposium.music.org/htdocs/mmp_upgrade/modules/mod_janewspro/helpers/jaimage.php on line 290
Do you have an idea what I need to do to resolve this problem?
