What are the potential pitfalls of not understanding or addressing PHP error messages promptly?

If PHP error messages are not understood or addressed promptly, it can lead to unresolved issues in the codebase, causing potential security vulnerabilities, performance issues, and functionality problems. It is crucial to address PHP error messages promptly to ensure the stability and security of the application.

// Example of promptly addressing a PHP error message by fixing a syntax error

// Before fixing the syntax error
$variable = 10
echo $variable;

// After fixing the syntax error
$variable = 10;
echo $variable;