I update my site from 3.1.2 to 3.1.4 and change from php 5 to php 7. But my site is not working. Not working with php 5 and php 7.
Warning : Declaration of CustomHeaderPlugin::register($category, $path) should be compatible with LazyLoadPlugin::register($category, $path, $mainContextId = NULL) in /home/c/cl40014/thesystemtechnologies.com/public_html/plugins/generic/customHeader/CustomHeaderPlugin.inc.php on line 0
Warning : Declaration of ShibbolethAuthPlugin::register($category, $path) should be compatible with LazyLoadPlugin::register($category, $path, $mainContextId = NULL) in /home/c/cl40014/thesystemtechnologies.com/public_html/plugins/generic/shibboleth/ShibbolethAuthPlugin.inc.php on line 0
Fatal error : Uncaught Error: Call to undefined method ImmersionThemePlugin::getTemplateResourceName() in /home/c/cl40014/thesystemtechnologies.com/public_html/plugins/themes/immersion/ImmersionThemePlugin.inc.php:70 Stack trace: #0 /home/c/cl40014/thesystemtechnologies.com/public_html/lib/pkp/classes/plugins/Plugin.inc.php(351): ImmersionThemePlugin->getTemplatePath(false) #1 /home/c/cl40014/thesystemtechnologies.com/public_html/lib/pkp/classes/plugins/Plugin.inc.php(118): Plugin->_registerTemplateResource() #2 /home/c/cl40014/thesystemtechnologies.com/public_html/lib/pkp/classes/plugins/LazyLoadPlugin.inc.php(28): Plugin->register(‘themes’, ‘plugins/themes/…’, NULL) #3 /home/c/cl40014/thesystemtechnologies.com/public_html/lib/pkp/classes/plugins/ThemePlugin.inc.php(73): LazyLoadPlugin->register(‘themes’, ‘plugins/themes/…’, NULL) #4 /home/c/cl40014/thesystemtechnologies.com/public_html/lib/pkp/classes/plugins/PluginRegistry.inc.php(69): ThemePlugin->register(‘themes’, ‘plugins/themes/…’, NULL) #5 /home/c/cl40014/th in /home/c/cl40014/thesystemtechnologies.com/public_html/plugins/themes/immersion/ImmersionThemePlugin.inc.php on line 70
How can I solve my problem?