Error in Upgrade 3.0.0

I want upgrade ojs to 3.0.0 but in upgrade page see this text

s/.com/public_html/journals/ojs-3.0.0/plugins/blocks/information/InformationBlockPlugin.inc.php on line 0 Strict Standards: Declaration of RelatedItemsBlockPlugin::getContents() should be compatible with BlockPlugin::getContents($templateMgr, $request = NULL) in /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/plugins/blocks/relatedItems/RelatedItemsBlockPlugin.inc.php on line 0 Strict Standards: Declaration of LanguageToggleBlockPlugin::getContents() should be compatible with BlockPlugin::getContents($templateMgr, $request = NULL) in /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/plugins/blocks/languageToggle/LanguageToggleBlockPlugin.inc.php on line 0 Strict Standards: Non-static method Version::fromString() should not be called statically in /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/lib/pkp/classes/site/VersionCheck.inc.php on line 115 Warning: Cannot modify header information - headers already sent by (output started at /home2/wsrpubli/domains/com/public_html/journals/ojs-3.0.0/plugins/blocks/information/InformationBlockPlugin.inc.php:0) in /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 781 Warning: Cannot modify header information - headers already sent by (output started at /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/plugins/blocks/information/InformationBlockPlugin.inc.php:0) in /home2/wsrpubli/domains/.com/public_html/journals/ojs-3.0.0/lib/pkp/classes/template/PKPTemplateManager.inc.php on line 784

Hi @Adminojs,

These warnings are cosmetic, but will cause problems when they appear e.g. in JSON subrequests. You can configure your PHP to stop reporting them. Google up “PHP suppress strict warnings” for details.

Regards,
Alec Smecher
Public Knowledge Project Team