The Laravel 9 has a few system requirements. You should ensure that your web server has the following minimum PHP version and extensions:

• PHP >= 8.1
• Ctype PHP Extension
• cURL PHP Extension
• DOM PHP Extension
• Fileinfo PHP Extension
• Filter PHP Extension
• Hash PHP Extension
• Mbstring PHP Extension
• OpenSSL PHP Extension
• PCRE PHP Extension
• PDO PHP Extension
• Session PHP Extension
• Tokenizer PHP Extension
• XML PHP Extension