Accessing Edit Site via Admin Bar on frontend results in error

[westonruter]

Description

I just tried pulling down the latest commits from trunk (611a317) and I ran npm install && npm run build. I then went to the frontend, and I clicked "Edit Site" in the admin bar. The result was an error:

This error is the only content shown on the screen.

This happens when clicking on Edit Site from various templates on the frontend:

• Homepage: /wp-admin/site-editor.php?canvas=edit&p=%2Fwp_template%2Ftwentytwentyfive%2F%2Fhome
• Page: /wp-admin/site-editor.php?canvas=edit&p=%2Fwp_template%2Ftwentytwentyfive%2F%2Fpage
• Single: /wp-admin/site-editor.php?canvas=edit&p=%2Fwp_template%2Ftwentytwentyfive%2F%2Fsingle

If, however, I go into the WP Admin and access the Site Editor there, I am then able to Navigate to templates and access the template editors as expected:

• Index: /wp-admin/site-editor.php?p=%2Fwp_registered_template%2Ftwentytwentyfive%2F%2Findex&canvas=edit
• Pages: /wp-admin/site-editor.php?p=%2Fwp_template%2F509&canvas=edit
• Single: /wp-admin/site-editor.php?p=%2Fwp_template%2F288&canvas=edit

Note the difference in the query parameters. It seems the Admin Bar item isn't getting updated to use whatever new query parameters are being used.

When I deactivate Gutenberg, I'm able to use the Edit Site admin bar item again from the frontend.

Related:

• Admin bar: Edit site link should open the current template #37850
• Update the “Edit site” admin bar control to open the Site Editor at the top-level, consistently #63785

Step-by-step reproduction instructions

1. Activate Gutenberg
2. Pull the latest commits in trunk (611a317)
3. Run npm install && npm run build.
4. Activate the twentytwentyfive theme.
5. Click on "Edit Site" from the admin bar on the frontend.
6. See the error.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure

[ellatrix]

This should be fixed by #72003