On Laravel 12, Fatal error after installing php-flasher/flasher-laravel — foreach() argument must be of type array|object, bool given #52

Immediately after installing php-flasher/flasher-laravel, the application breaks with the following error:

foreach() argument must be of type array|object, bool given
Simply installing the package causes this fatal error.

Steps to Reproduce:

Create a fresh Laravel app.

Run:

composer require php-flasher/flasher-laravel

Load any page in the app — no usage of flasher() or flasher_render() yet.

Laravel crashes with a foreach() error.

i have this error tooo ..

@dlopez525

Hello @dlopez525 and @KavanAhmadian,

Thank you for reporting this issue. To help me diagnose and fix this problem efficiently, could you please:

Create a minimal GitHub repository that reproduces this issue with a fresh Laravel installation + PHPFlasher
Include information about your environment:
- Laravel version
- PHP version
- The exact installation command you used

Thank you

@yoeunes

@yoeunes

php => 8.2
laravel => 11.3
commaand => composer require php-flasher/flasher-laravel

but when i down grade to version 1.15 is worked ..

@KavanAhmadian

@KavanAhmadian Thanks for the version info! Interesting that 1.15 works for you - that's a helpful clue.

Could you create a quick GitHub repo that shows the issue? Just a basic setup where the error happens would be perfect. This would save me tons of time figuring out exactly what's breaking with Laravel 11.3

@yoeunes

@yoeunes

The error I get is when I upgrade from Laravel 11 to 12. Exactly in Laravel version 12.0.6, with PHP 8.3.19

@dlopez525

Hi @dlopez525 and @KavanAhmadian, thanks for the environment details!

could one of you please create a simple GitHub repository that reproduces the error?

Seeing it in action is the quickest way for me to diagnose and fix it for both Laravel 11 and 12. Thanks! 🙏

Hi,
I had the same error.
I fixed it removing the config/flasher.php file and could check what exactly caused the crash.
In my case, it was the 'flash_bag' that I just commented and it's now working.
Has the bug after migrating to laravel 12 and updating all packages.

The error was in the Flasher \ Prime \ Http \ RequestExtension : 45 in the foreach for aliases.

foreach ($mapping as $type => $aliases) {
    foreach ($aliases as $alias) {
        $flatMapping[$alias] = $type;
    }
}

Don't know if it can help.

Edit : I had old version of config file, then I just regenerated the config and to completely fix I had to use the command to re publish the css/js in vendor.
Then just changed the css class .fl-main-container to .fl-wrapper in my code.

The exact part of config that was breaking the code was :

'flash_bag' => array(
    'enabled' => true,
     'mapping' => array(
           'success' => array('success'),
           'error' => array('error', 'danger'),
           'warning' => array('warning', 'alarm'),
           'info' => array('info', 'notice', 'alert'),
    ),
),

That should now be :

'flash_bag' => [
        'success' => ['success'],
        'error' => ['error', 'danger'],
        'warning' => ['warning', 'alarm'],
        'info' => ['info', 'notice', 'alert'],
],

'flash_bag' => [
'success' => ['success'],
'error' => ['error', 'danger'],
'warning' => ['warning', 'alarm'],
'info' => ['info', 'notice', 'alert'],
],

Thank you for sharing, this worked for me.

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On Laravel 12, Fatal error after installing php-flasher/flasher-laravel — foreach() argument must be of type array|object, bool given #52 #287

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On Laravel 12, Fatal error after installing php-flasher/flasher-laravel — foreach() argument must be of type array|object, bool given #52 #287

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KavanAhmadian commented on Apr 13, 2025

yoeunes commented on Apr 13, 2025

KavanAhmadian commented on Apr 13, 2025

yoeunes commented on Apr 13, 2025

dlopez525 commented on Apr 13, 2025

yoeunes commented on Apr 15, 2025

nonoodev commented on Apr 23, 2025

abraaoribeiro28 commented on May 16, 2025

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