org.eclipse.jdt.core.IClasspathEntry.getPath() is null

[Mastergord]

An unexpected internal exception occurred. Please see log for detail.
Plug-in Provider:Eclipse BIRT Project
Plug-in Name:BIRT Designer UI
Plug-in ID:org.eclipse.birt.report.designer.ui
Version:4.17.0.v202409011308
Error Code:Error.GUIException.invokedByUnexpectedException
Error Message:Cannot invoke "org.eclipse.jdt.core.IClasspathEntry.getPath()" because the return value of "org.eclipse.jdt.core.JavaCore.getResolvedClasspathEntry(org.eclipse.jdt.core.IClasspathEntry)" is null

Any ideas how resolve this problem?

[merks]

Is there no full stack trace available in the Error log view for this? I can't tell where this is coming from just from the error message...

Is this using the latest build?

https://download.eclipse.org/birt/updates/nightly/latest