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Fixing Module Configure Button Not Working on Product Page

If you cannot click the Configure button for a module inside the Modules section of a PrestaShop product page — and instead the page reloads — this is not an issue with the module, but a known PrestaShop bug.

It usually happens because there are invalid characters or unexpected formatting in the short description or description fields of the product.
This can be due to:

  • Copying text from Word, Google Docs, PDFs, or websites (which adds hidden characters)
  • The description not being properly wrapped in HTML tags

🆕 Recommended Method – Wrap the Description in HTML​

Recently, we’ve found that the error can often be solved by ensuring the description is wrapped inside valid HTML tags, such as <p>.

Step-by-Step​

  1. Go to the Back Office and edit the product with the issue.
  2. Locate the Description or Short Description field.
  3. Check if your content is wrapped in HTML tags.
  4. If not, wrap it manually or via the editor:

Example before:

This is my product description.

Example after:

<p>This is my product description.</p>

  1. In the PrestaShop editor, you can:

    • Select the text
    • Click the Paragraph button
    • Or switch to code view and add the tags manually

  2. Save the product.

  3. Clear the cache: Back Office → Advanced Parameters > Performance → Clear Cache

  4. Reload the product page and check if the Configure button works.

🛠 Old Procedure – Remove and Clean the Text (Always Works)​

If the HTML-wrapping fix doesn’t solve the problem, you can use the older method, which is guaranteed to work.

Temporary Workaround​

  1. Copy the full text from the problematic field (short or full description).
  2. Remove the text completely.
  3. Save the product.
  4. Reload the product page.
  5. Paste the text back into the field.
  6. Save the product again.

Sometimes there may be hidden characters inside the text caused by a copy paste or even text-writters like Word can add them. If that's your case, we recommend:

  1. Copy the text into a plain text editor (e.g., Notepad) to remove all hidden formatting.
  2. Paste it back into PrestaShop.
  3. Save the product.

This ensures there are no hidden or invalid characters that can cause JavaScript errors.

Why Fixing the error Matters​

When a JavaScript error happens:

  • Product Edit page won't load all it's functionalities correctly
  • Modules can’t load their configuration
  • Buttons may not work
  • The page may reload unexpectedly when saving

By fixing the text formatting and resolving the errors your product pages will work as expected.

Need help? Contact us and we’ll guide you step-by-step.