Getting error in installation

[niladrishekhar]

Hi,
PHP 8.1.13 (cli)
mysql Ver 15.1 Distrib 10.9.4-MariaDB
nginx version: nginx/1.22.1
6.1.1-1-MANJARO

Trying to start working on OrangeScrum and getting the following error -

2022/12/26 18:29:46 [error] 30680#30680: *1 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported in /var/www/orangescrum/lib/Cake/Utility/Folder.php on line 523PHP message: PHP Fatal error:  Uncaught TypeError: fclose(): supplied resource is not a valid stream resource in /var/www/orangescrum/app/webroot/index.php:80
Stack trace:
#0 /var/www/orangescrum/app/webroot/index.php(80): fclose()
#1 [internal function]: shutdown()
#2 {main}
  thrown in /var/www/orangescrum/app/webroot/index.php on line 80" while reading response header from upstream, client: 127.0.0.1, server: pop.orangescrum.cerulean, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "pop.orangescrum.cerulean"
2022/12/26 18:31:18 [error] 31550#31550: *1 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported in /var/www/orangescrum/lib/Cake/Utility/Folder.php on line 523" while reading response header from upstream, client: 127.0.0.1, server: pop.orangescrum.cerulean, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "pop.orangescrum.cerulean"
2022/12/26 18:38:40 [error] 31550#31550: *4 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: pop.orangescrum.cerulean, request: "GET /setup.php HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "pop.orangescrum.cerulean"
2022/12/26 18:38:40 [error] 31550#31550: *4 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client: 127.0.0.1, server: pop.orangescrum.cerulean, request: "GET /favicon.ico HTTP/1.1", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "pop.orangescrum.cerulean", referrer: "http://pop.orangescrum.cerulean/setup.php"
2022/12/26 18:56:03 [error] 34623#34623: *5 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Array and string offset access syntax with curly braces is no longer supported in /var/www/orangescrum/lib/Cake/Utility/Folder.php on line 523" while reading response header from upstream, client: 127.0.0.1, server: pop.orangescrum.cerulean, request: "GET / HTTP/2.0", upstream: "fastcgi://unix:/run/php-fpm/php-fpm.sock:", host: "pop.orangescrum.cerulean"

Is it possible because of PHP8 ?

[Andolatapan]

@niladrishekhar
Yes, the issue is with the version. The current open-source edition is tested in PHP 7.2 MySql 5.6 and the framework CakePHP 2.