Hi Boris,
Thank you for reaching out to us. Please kindly do a plugin compatibility check by doing these steps to identify the error :
=> Deactivate all of your additional plugins except the WooCommerce and WooCommerce Variation Swatches Plugin.
=> See if the problem persists. If the problem is resolved, you can tell which plugin might be the culprit of this error by activating your additional plugins one by one.
To perform the above steps you can use Health Check & Troubleshooting Plugin. It will help you to test plugins/themes without deactivating them in real time.
Looking forward to hearing from you soon.
Thank you
Show single attribute variation image based on first attribute select on product page.
Boris Danich
Hi, this function not working and image is not changed