Java: NoClassDefFoundException

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Hello. My name is Jihoon Sim.

When I run OpenEMS project in Eclipse for Windows,
(GitHub - OpenEMS/openems: OpenEMS - Open Source Energy Management System)
some errors occur as images below. Is there anything else I have to set additionally?

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Specifically, I followed the steps exactly on the website below.
https://openems.github.io/openems.io/openems/latest/gettingstarted.html

I followed the steps up to ‘3-1-a’ and pressed the button ‘Run OSGi’. But some errors occurred (Java: NoClassDefFoundException).
I think I missed some settings, but I am wondering if you know anything.

I am looking forward to receiving your reply.
Thanks for your reading.

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close IDE restart, resolve bundles

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Hi @spg1101 and welcome to the Community.

Usually these errors should only rarely happen during development. Please try to follow the steps listed here to fix them:

Regards,
Stefan

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