I get an error on Magento 2.3.5-p1 when trying to add products to an existing category.
The products won’t save and I get this message:
Argument 1 passed to MagentoCatalogModelCategoryFileInfo::removeStorePath() must be of the type string, array given, called in /cache/vendor/magento/module-catalog/Model/Category/FileInfo.php on line 167
If I navigate to the product page to add to a category i get this error:
Unable to unserialize value. Error: Syntax error
and this in the log:
[2020-09-18 19:44:02] main.CRITICAL: Unable to unserialize value. Error: Syntax error {“exception”:”[object] (InvalidArgumentException(code: 0): Unable to unserialize value. Error: Syntax error at /cache/vendor/magento/framework/Serialize/Serializer/Json.php:39)”} []
How can I fix this?