SAP HANA Administration Console - Java Error by adding system

Hi,

i try to add a HANA System at the SAP HANA Administration Console in Eclipse.

If I use the connection with the wrong password it looks like the connection works:

If I use the correct password I get the following message

java.lang.NoClassDefFoundError: javax/xml/soap/SOAPException

I am using Eclipse version 2020-03 and the problem also occurred with the old version. Do any of you have an idea to solve the problem?

Regards Oliver