The last character at INSERT INTO signup of the database should be ";" not "," which gives error

Do we need to kick off anything for Hotel-Management-System service? Getting 'The Requested URL was not found on this server" for
http://localhost/Hotel-Management-System/ URL.

Description:
While working on my Hotel Management System project, I encountered the following error in the Apache error log:
[Wed Apr 10 17:28:29.126727 2024] [php:error] [pid 15690] [client 127.0.0.1:53152] PHP Fatal error: Uncaught Error: mysqli object is already closed in /var/www/html/Hotel-Management-System/index.php:10\nStack trace:\n#0 /var/www/html/Hotel-Management-System/index.php(10): mysqli_query()\n#1 {main}\n thrown in /var/www/html/Hotel-Management-System/index.php on line 10, referer: http://localhost/Hotel-Management-System/
This error indicates that the mysqli object is already closed at line 10 of my index.php file. Here's the corresponding stack trace:

#0 /var/www/html/Hotel-Management-System/index.php(10): mysqli_query() #1 {main}
It seems to be causing issues with the functionality of my application, particularly in the database interaction part. I've tried troubleshooting it, but I'm unable to pinpoint the exact cause.

If anyone has encountered a similar issue or has insights on how to resolve this, I would greatly appreciate your assistance. Thank you!

Hello 👋

I run a security community that finds and fixes vulnerabilities in OSS. A researcher (@3santree) has found a potential issue, which I would be eager to share with you.

Could you add a SECURITY.md file with an e-mail address for me to send further details to? GitHub recommends a security policy to ensure issues are responsibly disclosed, and it would help direct researchers in the future.

Looking forward to hearing from you 👍

(cc @huntr-helper)