Figure 15
The left screen displays the title “Sign in” at the top center, with the subtitle “Welcome back.” Below are two entry fields: one labeled “Email Address” with the input “aftab 1 2 3 at the rate gmail dot com,” and one labeled “Password.” A dark button below is labeled “Sign In.” Centered on the screen is a pop-up message box containing the text “Wrong email or password,” with a button labeled “Ok” at the bottom right. Below the sign-in button is the text: “New member Sign Up.” The right screen displays the title “Farmer List” at the top left, with a back arrow to its left, and shopping cart and user profile icons on the right. Below is a dark background with five rectangular name panels arranged in a vertical series labeled from top to bottom as follows: “John Doe,” “Jane Smith,” “Maria Garcia,” and “Ahmed Khan.” Overlaid at the center, above the third panel, is a pop-up box with the title “Restricted” and the message “You do not have access rights for this,” followed by a button labeled “Ok” at the bottom right.(a) Error handling for invalid data; (b) server errors and restricted access, displaying user-friendly messages. Source: Authors’ own creation/work