ERROR ERROR

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I'm a newer in the business Intelligence world and for my projects I used pentaho

as BI SERVER (BA SERVER), i have the version 6.1.0.0.96 on a linux server

and I use PDI 7.0.0.0.25 on a client windows.

When I try to run PDI on a linux system I don't have the connection interface (it's a blank)

About the error, please look at the attached file

also , when I launch PDI on my linux server I have this message : "Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0" and I try to connect I have a blank connection window