Whenever we are clicking on a Product on Admin site, we are getting this Error.
Exception #0 (Exception): Item (Magento\CatalogInventory\Model\Stock\Status) with the same ID "1" already exists
Whenever we are clicking on a Product on Admin site, we are getting this Error.
Exception #0 (Exception): Item (Magento\CatalogInventory\Model\Stock\Status) with the same ID "1" already exists
It occurs when you have duplicated entries in your stock status collection.
If you customized the catalog/product page, try to debug your stock status collection, or turn on the mysql queries log and see if have duplicated ids in the last logged query.