What potential issue could arise from not properly setting error handling in a PHP script?

If error handling is not properly set in a PHP script, potential issues could include uncaught exceptions or errors that disrupt the flow of the program, leading to unexpected behavior or security vulnerabilities. To solve this, it is important to implement error handling using try-catch blocks to catch and handle exceptions gracefully.

try {
    // Your PHP code that may throw exceptions or errors
} catch (Exception $e) {
    // Handle the exception, log it, or display a user-friendly error message
}