Structure Field cause error undefined (reading 'dispatch')

Hello everyone

I have a website which contains different tabs in the blueprint. In these tabs are different fields, but the structure field in the second tab seems to cause an error. If I delete it or replace the first one with the second one, everything works.

Cannot read properties of undefined (reading 'dispatch')

In my local environment and on our hosting the editing works fine.
Only on the foreign hosting I get an error message.

This is how the panel looks like


And this is the blueprint

title: Nutzfahrzeuge
icon: sort

tabs:
  content:
    label: Inhalt
    icon: dashboard
    columns:
      main:
        width: 1/3
        fields:
          titel:
            type: text
          text:
            type: textarea
            size: medium

          blocks:
            type: blocks
            fieldsets:
              text:
                label: Text
                type: group
                fieldsets:
                  heading:
                    extends: blocks/heading
                    fields:
                      customId:
                        label: ID
                        type: text
                  - text
                  - table
                  - timeline
                  - code
                  - button:
                    extends: blocks/button
              media:
                label: Media
                type: group
                fieldsets:
                  - image
                  - gallery
                  - video
      sidebar:
        width: 2/3
        fields:
          miete_nutzfahrzeuge:
            label: Miete Nutzfahrzeuge
            type: structure
            fields:
              dauer:
                max: 1
                type: multiselect
                options:
                  1/2 Tag: 1/2 Tag
                  1-2 Tage: 1-2 Tage
                  3-6 Tage: 3-6 Tage
                  7-30 Tage: 7-30 Tage
                  1 Monat: 1 Monat
                  2-11 Monate: 2-11 Monate
                  ab 12 Monaten: ab 12 Monaten
                width: 1/4
              km:
                label: Km/Tag
                type: text
                width: 1/4
              preis:
                label: Preis/Tag
                type: text
                width: 1/4
              text:
                type: text
                width: 1/4

  nutzfahrzeuge:
    label: Nutzfahrzeuge
    icon: car
    columns:
      main:
        width: 2/3
        fields:
          nutzfahrzeuge:
            label: Nutzfahrzeuge
            type: structure
            fields:
              fahrzeug:
                type: text
                width: 1/4
              slug:
                type: slug
                width: 1/4
                sync: fahrzeug
              bild:
                type: files
                multiple: false
                width: 1/4
              toggle:
                label: Verfügbar?
                type: toggle
                text: 
                  - "Nein"
                  - "Ja"
                width: 1/4
              ausstattung:
                type: text
                width: 1/2
              kraftstoff:
                max: 1
                type: multiselect
                options:
                  Verbrenner: Verbrenner
                  Elektro: Elektro
                width: 1/4
              kraftstoff2:
                max: 1
                type: multiselect
                options:
                  Verbrenner: Verbrenner
                  Elektro: Elektro
                width: 1/4
      sidebar:
        width: 1/3
        fields:
          bilder_grossraum:
            label: Bilder Grossraum
            type: files
            template: image

In the frontend everything works fine: https://carabo-sursee.ch

Does anyone see where I made the mistake?

This here looks wrong (wrong indentation, there should be no dash), although I see no connection to the structure.

Thank you @texnixe .
I don’t need this block, so I deleted it completely. But the error still remains.

I am rebuilding this page to see at what point the error occurs. Maybe I can narrow it down. Write again as soon as I know more.