Now after all design changes when this installation was moved to live server, we made the respective changes in DB, env.php and cleared cache.
Every link and all functionalities are working fine except 'Add to cart' functionality has stopped working.
Following are the issues with 'Add to cart':
On category page (product listing page): when 'Add to cart' button is clicked, it directly takes to 'cart' page without adding product to cart.
On Product detail page: When clicked on 'Add to cart' button, its text changes to 'Adding' and it stays the same and product is never added to cart.
There are no errors in console for both of the above scenarios.
Following I have tried:
Deleted following directories:
Ran these commands using ssh:
php bin/magento setup:static-content:deploy
php bin/magento indexer:reindex
And following commands to give magento's default permissions to directories:
sudo chmod -R a+wX pub
sudo chmod -R a+wX var
sudo chmod -R a+wX app
sudo chmod -R a+wX app/etc
sudo chmod -R a+wX generated
Updated cookie_lifetime to 86400 in admin.
Cleared cache from admin.
But still issue persists.
Please help in resolving this.