Prestashop version 1.7.6.5 - also appeared in 1.7.3
I have scoured the forums and google looking at related posts with no solution.
Description.
When visiting a product page and adding the product to the cart the popup appears but no product is added.
Useful url for you to quickly test: https://www.creative-art-supplies.co.uk/colour/artist-ink/acrylic-ink/daler-rowney-fw-acrylic-artist-ink-180ml.html
What have I done to fix with no solution
I have disabled almost every module stripped prestashop right down to basic modules.
I have cleared cache, wiped cookies from browser, ran in incognito.
Truncated the connections tables in database.
Wiped the theme (using default classic) and re installed the theme with default files using ftp.
Checked all browsers. Problem occurs in every one.
Ran debug mode to check for errors - none showing
So what could have triggered the issue?
New modules installed (possible but these have all been disabled)
Database problem with carts and orders (likely) I do have another module (fastbay) which is returning unknow error on importing orders. I think the 2 problems are linked
I am happy to pay for someone to fix this problem.