Notice: Only variables should be assigned by reference in /var/www/html/ojs3x.vjs.ac.vn/vjst/plugins/generic/formHoneypot/FormHoneypotPlugin.inc.php on line 204

Notice: Only variables should be assigned by reference in /var/www/html/ojs3x.vjs.ac.vn/vjst/plugins/generic/formHoneypot/FormHoneypotPlugin.inc.php on line 205

Fatal error: Uncaught Error: Call to a member function getId() on null in /var/www/html/ojs3x.vjs.ac.vn/vjst/plugins/generic/orcidProfile/OrcidProfilePlugin.inc.php:304 Stack trace: #0 /var/www/html/ojs3x.vjs.ac.vn/vjst/plugins/generic/orcidProfile/OrcidProfilePlugin.inc.php(343): OrcidProfilePlugin->buildOAuthUrl('orcidAuthorize', Array) #1 /var/www/html/ojs3x.vjs.ac.vn/vjst/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_runtime_filterhandler.php(63): OrcidProfilePlugin->registrationFilter('<!DOCTYPE html>...', Object(Smarty_Internal_Template)) #2 /var/www/html/ojs3x.vjs.ac.vn/vjst/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_template.php(231): Smarty_Internal_Runtime_FilterHandler->runFilter('output', '<!DOCTYPE html>...', Object(Smarty_Internal_Template)) #3 /var/www/html/ojs3x.vjs.ac.vn/vjst/lib/pkp/lib/vendor/smarty/smarty/libs/sysplugins/smarty_internal_templatebase.php(232): Smarty_Internal_Template->render(false, 1) #4 /var/www/html/ojs3x.vjs.ac.vn/vjst/lib/pkp/lib/vendor/smar in /var/www/html/ojs3x.vjs.ac.vn/vjst/plugins/generic/orcidProfile/OrcidProfilePlugin.inc.php on line 304