https://www-stage.greenpeace.org/denmark/wp-admin/post.php?post=12710&action=edit

I stumbled upon this issue just now on the
staging site (the same page on the dev site has no issues), when I open the
editor of the page the gutenberg interface breaks and nothing can undo it,
I tried hard refresh, purging cache, disabling the child theme and the
custom leads plugin we use, copied to a new draft (new one crashed too),
deactivation the media library plugin and ticking the new beta substitute
for it, nothing had any effect. I think the problem is with the timeline
block, because I tried the content code without it on a new draft and the
problem was gone. Then I added it back and it crashed again.

Here is the error I get: TypeError: this.activateMode is not a function
     at
https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:59604

     at se
(https://cdn.knightlab.com/libs/timeline3/3.8.12/js/timeline-min.js:11:4747)
     at Function.oo
(https://cdn.knightlab.com/libs/timeline3/3.8.12/js/timeline-min.js:11:40893)
     at n._createModes
(https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:59564)
     at n.initialize
(https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:58973)
     at n.initialize
(https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:79857)
     at n.initialize
(https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:73432)
     at h.View
(https://www-stage.greenpeace.org/denmark/wp-includes/js/backbone.min.js?ver=1.4.1:2:14648)
     at n.constructor
(https://www-stage.greenpeace.org/denmark/wp-includes/js/wp-backbone.min.js?ver=6.2.2:2:2602)
     at n.constructor
(https://www-stage.greenpeace.org/denmark/wp-includes/js/media-views.min.js?ver=6.2.2:2:106817)

And here is the block that I think is triggering it:
<!-- wp:planet4-blocks/timeline

{"google_sheets_url":"[https://docs.google.com/spreadsheets/d/e/2PACX-1vT0Fie3_h4p_gOl4YSu-7C_r4NEA01CbSI2i5AGOQJaN5F55yvdMrlwNzzybjV-K85XA85qs6muSa56/pubhtml]"}

-->
<div class="wp-block-planet4-blocks-timeline"
data-render="planet4-blocks/timeline"
data-attributes="{"attributes":

{"timeline_title":"","description":"","google_sheets_url":"[https://docs.google.com/spreadsheets/d/e/2PACX-1vT0Fie3_h4p_gOl4YSu-7C_r4NEA01CbSI2i5AGOQJaN5F55yvdMrlwNzzybjV-K85XA85qs6muSa56/pubhtml","language":"en","timenav_position":"","start_at_end":false}

,"innerBlocks":[]}"></div>|https://docs.google.com/spreadsheets/d/e/2PACX-1vT0Fie3_h4p_gOl4YSu-7C_r4NEA01CbSI2i5AGOQJaN5F55yvdMrlwNzzybjV-K85XA85qs6muSa56/pubhtml","language":"en","timenav_position":"","start_at_end":false%7D,"innerBlocks":[]%7D%22%3E%3C/div%3E];
<!-- /wp:planet4-blocks/timeline -->