Index out of bounds exception for empty PhdThesis bibtex entry with IEEE

[Siedlerchr]

Describe the bug

Created an empty PhdThesis bibtex entry in biblatex mode in JabRef (latest main):

@PhdThesis{,
}

Selected Preview Style IEEE got the following error: Using this version of the style

ieee.csl.txt

2023-05-07 11:12:01 [JavaFX Application Thread] org.jabref.gui.preview.PreviewViewer.lambda$8()
ERROR: Error while generating citation style: java.lang.IndexOutOfBoundsException: Index 3 out of bounds for length 3
    at java.base/java.util.Objects.checkIndex(Objects.java:385)
    at java.base/java.util.ArrayList.get(ArrayList.java:427)
    at citeproc.java@3.0.0-beta.2/de.undercouch.citeproc.csl.internal.format.HtmlFormat.doFormatBibliographyEntry(HtmlFormat.java:38)
    at citeproc.java@3.0.0-beta.2/de.undercouch.citeproc.csl.internal.format.BaseFormat.formatBibliographyEntry(BaseFormat.java:249)
    at citeproc.java@3.0.0-beta.2/de.undercouch.citeproc.CSL.makeBibliography(CSL.java:1027)
    at citeproc.java@3.0.0-beta.2/de.undercouch.citeproc.CSL.makeBibliography(CSL.java:910)
    at org.jabref/org.jabref.logic.citationstyle.CSLAdapter.makeBibliography(CSLAdapter.java:47)
    at org.jabref/org.jabref.logic.citationstyle.CitationStyleGenerator.generateCitations(CitationStyleGenerator.java:62)
    at org.jabref/org.jabref.logic.citationstyle.CitationStyleGenerator.generateCitation(CitationStyleGenerator.java:52)
    at org.jabref/org.jabref.logic.citationstyle.CitationStylePreviewLayout.generatePreview(CitationStylePreviewLayout.java:19)
    at org.jabref/org.jabref.gui.preview.PreviewViewer.lambda$5(PreviewViewer.java:255)
    at org.jabref/org.jabref.gui.util.BackgroundTask$1.call(BackgroundTask.java:60)
    at org.jabref/org.jabref.gui.util.DefaultTaskExecutor$1.call(DefaultTaskExecutor.java:161)
    at javafx.graphics@20/javafx.concurrent.Task$TaskCallable.call(Task.java:1426)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:577)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
    at java.base/java.lang.Thread.run(Thread.java:1589)

Which version of citeproc-java are you using? 3.0.0-beta.2

Expected behavior Empty preview e.g [1]

Actual behavior A bug occured

CSL input If applicable, add the input to citeproc-java (i.e. the CSL citation data in JSON)

Used style and locale IEEE with default locale en-US

Rendered output/Screenshots Error while generating citation style (comes from JabRef)

Example code/unit test Provide example code or a unit test to reproduce your issue. You may also insert a link to your repository containing a minimal reproducer here.

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[Siedlerchr]

Still an issue