"Error indexing package names!"

After a fresh OOmphed Platform workspace eclipse starts with 6 times this error in the log (i have not seen those before):
```
Java Model Exception: Error in Java Model (code 969): C:\Users\jkubitz\platform-2024-01-10\git\eclipse.pde\apitools\org.eclipse.pde.api.tools.annotations\ does not exist
at org.eclipse.jdt.internal.core.JavaElement.newJavaModelException(JavaElement.java:559)
at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:254)
at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:572)
at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java:303)
at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java:289)
at org.eclipse.jdt.internal.core.JavaElement.getChildren(JavaElement.java:244)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.indexPackageNames(JavaSearchNameEnvironment.java:231)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.computeClasspathLocations(JavaSearchNameEnvironment.java:220)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.computeClasspathLocations(JavaSearchNameEnvironment.java:189)
at org.eclipse.jdt.internal.core.search.matching.JavaSearchNameEnvironment.(JavaSearchNameEnvironment.java:97)
at org.eclipse.jdt.internal.core.search.indexing.SourceIndexer.resolveDocument(SourceIndexer.java:167)
at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.resolveDocument(JavaSearchParticipant.java:117)
at org.eclipse.jdt.internal.core.search.indexing.IndexManager.indexResolvedDocument(IndexManager.java:681)
at org.eclipse.jdt.internal.core.search.indexing.IndexManager$2.execute(IndexManager.java:1292)
at org.eclipse.jdt.internal.core.search.processing.JobManager.indexerLoop(JobManager.java:542)
at java.base/java.lang.Thread.run(Thread.java:1583)
```
```
eclipse.buildId=4.31.0.I20240109-1800
java.version=21.0.1
java.vendor=Eclipse Adoptium
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=de_DE
Command-line arguments: -os win32 -ws win32 -arch x86_64 -data C:\Users\jkubitz\platform-2024-01-10\ws

This is a continuation of log file C:\Users\jkubitz\platform-2024-01-10\ws\.metadata\.bak_0.log
Created Time: 2024-01-10 09:44:24.207
```