Preview & Customize option for themes generates an error when trying to save/activate changes (Saving failed. TypeError: Failed to fetch)

[philnick206]

Quick summary

When using the Preview & Customize option from a theme page, users are not able to save/activate the theme. Instead, they see the error "Saving failed. TypeError: Failed to fetch"

Steps to reproduce

1. Log in to a site with a free or Personal plan
2. Navigate to a theme that requires and upgrade to use
3. Click on Preview & Customize
4. Go to the Editor under Appearance > Editor and edit a page
5. Click on Activate/save in the upper right

A clear and concise description of what you expected to happen.

I would expect to be directed to checkout/pay for the required plan upgrade

What actually happened

Error is displayed: Saving failed. TypeError: Failed to fetch

Impact

All

Available workarounds?

Yes, easy to implement

If the above answer is "Yes...", outline the workaround.

Purchase plan first and then activate theme

Platform (Simple and/or Atomic)

Simple

Logs or notes

Reported in 8891321-zd-a8c

[github-actions]

Support References

This comment is automatically generated. Please do not edit it.

• 8891321-zen