Cannot add a new bib entry node with empty library

[Siedlerchr]

Open an empty library in JabRef
Add new BibEntry node

observer error logs

XHRGET
http://localhost:23119/better-bibtex/cayw?libraryid=jabref-authors.bib-07a56394&format=simple-json

SyntaxError: JSON.parse: unexpected end of data at line 1 column 1 of the JSON data [index-BKlN87bF.js:108:47](https://jabref.github.io/jabmap/assets/index-BKlN87bF.js)
    pt https://jabref.github.io/jabmap/assets/index-BKlN87bF.js:108
GET http://localhost:23119/better-bibtex/cayw?libraryid=jabref-authors.bib-07a56394&format=simple-json Request failed (.'T_T) [index-BKlN87bF.js:110:23](https://jabref.github.io/jabmap/assets/index-BKlN87bF.js)
There're no citation keys to create nodes from ( ,_,) [index-BKlN87bF.js:110:5806](https://jabref.github.io/jabmap/assets/index-BKlN87bF.js)
Fail: There're no BibEntry nodes to add as siblings ( ,_,) [index-BKlN87bF.js:110:7140](https://jabref.github.io/jabmap/assets/index-BKlN87bF.js)