Why is my contact form button not working?

Topic summary

Contact form “Send” button triggers an error in a customized Sense theme. Reverting the theme’s .liquid and .json files to the original Sense code did not fix the issue.

Observed behavior: switching to an unedited Sense template makes the button work, indicating the problem likely stems from customizations or configuration outside the reverted files (e.g., scripts, settings, or other theme edits).

Attachments: a screenshot of the error is included and appears central to understanding the exact failure.

Technical context: .liquid are Shopify theme template files; .json defines sections/settings in Shopify themes. Sense is a Shopify theme.

Status: no solution or consensus yet; the post requests suggestions and the issue remains open.

Summarized with AI on February 18. AI used: gpt-5.

Hi all,

My contact form is producing the below error when I click send, I have changed the .liquid and .JSON codes back to the original Sense theme codes but still no luck, however if I change my theme to an unedited Sense template the button works.

Does anyone have any suggestions on how to fix this?

Thank you.