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Error After Upgrading From 4.1.3 to 4.3.1 - Printable Version

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Error After Upgrading From 4.1.3 to 4.3.1 - frogy - 02-18-2023

I consciously updated codeigniter to version 4.3.1 from 4.1.3 using composer update command because i need the RawSql function for seeding.
Then when i tried to start the server, its get some errors : 


Code:
macpro@maulanaissaq ci4 % php spark serve
PHP Warning:  Use of undefined constant ENVIRONMENT - assumed 'ENVIRONMENT' (this will throw an Error in a future version of PHP) in /Users/macpro/Documents/GitHub/ci4/vendor/codeigniter4/framework/system/CLI/CLI.php on line 666

Warning: Use of undefined constant ENVIRONMENT - assumed 'ENVIRONMENT' (this will throw an Error in a future version of PHP) in /Users/macpro/Documents/GitHub/ci4/vendor/codeigniter4/framework/system/CLI/CLI.php on line 666

CodeIgniter v4.3.1 Command Line Tool - Server Time: 2023-02-18 06:51:27 UTC+00:00

PHP Warning:  Use of undefined constant CI_DEBUG - assumed 'CI_DEBUG' (this will throw an Error in a future version of PHP) in /Users/macpro/Documents/GitHub/ci4/vendor/codeigniter4/framework/system/Log/Logger.php on line 120

Warning: Use of undefined constant CI_DEBUG - assumed 'CI_DEBUG' (this will throw an Error in a future version of PHP) in /Users/macpro/Documents/GitHub/ci4/vendor/codeigniter4/framework/system/Log/Logger.php on line 120
CodeIgniter development server started on http://localhost:8080
Press Control-C to stop.
[Sat Feb 18 13:51:27 2023] PHP 7.4.33 Development Server (http://localhost:8080) started

Then when i open the brower it show :
Code:
Fatal error: Uncaught Error: Call to a member function run() on int in /Users/macpro/Documents/GitHub/ci4/public/index.php:37 Stack trace: #0 /Users/macpro/Documents/GitHub/ci4/vendor/codeigniter4/framework/system/Commands/Server/rewrite.php(47): require_once() #1 {main} thrown in /Users/macpro/Documents/GitHub/ci4/public/index.php on line 37

How to fix it? 
I've been using 4.1.3 for long time and not update it  Big Grin

RE: Error After Upgrading From 4.1.3 to 4.3.1 - kenjis - 02-18-2023

Please read Upgrading Guide:
https://codeigniter4.github.io/userguide/installation/upgrading.html

You need to update some files.