get blank screen after close java security confirmation popup

Hello,

After system update in last week when I try to download data from portal, I got blank screen after I close java security confirmation popup.

In java trace, I can see below a lot entries like below

security: Missing Application-Library-Allowable-Codebase manifest attribute for: http://<xxxxxxxx:xxxx>/sap/public/icmandir/its/lsgui/applets/ws.jar

security: Validate the certificate chain using CertPath API

basic: Plugin2ClassLoader.getPermissions CeilingPolicy allPerms

security: Validate the certificate chain using CertPath API

ruleset: Non-jnlp appRef:

        type: HTML

title: SAPGUI For HTML Applet

location: http://<xxxxxxxx:xxxx>/sap(cz1TSUQlM2FBTk9OJTNhc2FweGVxYV9YRVFfMDglM2FxWUJyZGNvNnNPTGlURnAzYm9kYWN6c253ZmNWRnFDX==)/bc/gui/sap/its/z_mmcec/12.139/data/getAppletPage?webgui_updown_no_itsframeset=1

I would appreciate if anyone can help me.

Best regards

J