Hello,

You should be accessing the installer at `https://www.billing.halimuzzaman.com/install`

It is showing the 500 error, please check your server error logs and let me know the error details so that I can suggest solution. You can check the Laravel log in the `storage/logs/` folder.

Thank you

[2023-10-15 17:31:45] laravel.EMERGENCY: Unable to create configured logger. Using emergency logger. {"exception":"[object] (Error(code: 0): Class \"Illuminate\\Support\\Collection\" not found at /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Collections/helpers.php:15)
[stacktrace]
#0 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Log/LogManager.php(244): collect()
#1 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Log/LogManager.php(202): Illuminate\\Log\\LogManager->createStackDriver()
#2 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Log/LogManager.php(118): Illuminate\\Log\\LogManager->resolve()
#3 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Log/LogManager.php(98): Illuminate\\Log\\LogManager->get()
#4 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Log/LogManager.php(555): Illuminate\\Log\\LogManager->driver()
#5 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(250): Illuminate\\Log\\LogManager->error()
#6 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/app/Exceptions/Handler.php(39): Illuminate\\Foundation\\Exceptions\\Handler->report()
#7 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(88): App\\Exceptions\\Handler->report()
#8 /home/halimuzzaman/domains/halimuzzaman.com/public_html/billing/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(130): Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleException()
#9 [internal function]: Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleShutdown()
#10 {main}
"}

Hello,

Have you uploaded all the files? I suspect you have missed the vendor folder. Please double check.

Thank you