page with timeline not editable

Hi Spectra Team,

on the above metioned website I use the Spectra block “Zeitachse” (timeline). When I try to edit the page I get an error (see attachment).

I tried to roll back to the Spectra version 2.16.4 but that did not solve the problem. Plug-ins are updated, the website runs with WP 6.2.2

What could be the reason for that? And how to solve it?

Thank you for your help
Stefan

The error log is:

le/<@https://sicherheitsingenieur.nrw/wp-content/plugins/ultimate-addons-for-gutenberg/dist/blocks.min.js?ver=2.16.5:1:772950

selectValue@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3804:40

__unstableMarkListeningStores@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:2964:23

createRegistry/withPlugins/</<@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3053:30

Store/</<@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3848:34

updateValue@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3814:25

Store/<@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3848:18

useMappingSelect@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3876:12

useSelect@https://sicherheitsingenieur.nrw/wp-includes/js/dist/data.js?ver=325ebd654e2aa93715a1:3963:58

le@https://sicherheitsingenieur.nrw/wp-content/plugins/ultimate-addons-for-gutenberg/dist/blocks.min.js?ver=2.16.5:1:772879

WA</<@https://sicherheitsingenieur.nrw/wp-content/plugins/ultimate-addons-for-gutenberg/dist/blocks.min.js?ver=2.16.5:19:2552624

renderWithHooks@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:16315:29

mountIndeterminateComponent@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:20084:15

beginWork@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:21597:18

beginWork$1@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:27436:16

performUnitOfWork@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:26567:14

workLoopSync@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:26476:24

renderRootSync@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:26444:9

recoverFromConcurrentError@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:25860:36

performSyncWorkOnRoot@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:26106:22

flushSyncCallbacks@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:12052:24

ensureRootIsScheduled/<@https://sicherheitsingenieur.nrw/wp-includes/js/dist/vendor/react-dom.js?ver=18.2.0:25661:15

The page I need help with: [log in to see the link]