The city is unknown. Please enter a valid city.
Why
Don’t make the user guess why the error occurred. Use a validation text to tell the user what went and why it went wrong
Why
Make clear that the bag is empty. Motivate the users to buy something and provide links.
Where
thieve
Why
Create an effective search box that transfers the weight from the searching to the reason for the search.
Where
b4upay
Why?
Offer benefits that users can immediately understand
Where
ted
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