Class "session" not found

Certainly! The issue here is about the case sensitivity and usage of the session helper or facade in Laravel.

Explanation

• Class "session" not found error happens because session with a lowercase s is not a class but a helper function in Laravel.
• When you use session::get() (with double colon), Laravel looks for a class named session, but the correct class is Session (capital S) or you should use the global helper function.

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Solution 1: Use the session() helper

The most common and recommended method in Blade:

@if ($message = session('flash'))
    <div class="alert alert-success">
        {{ $message }}
    </div>
@endif

• Here, session('flash') uses the global helper function to retrieve the value from the session.

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Solution 2: Use the Session facade (add the correct import)

If you want to use the facade approach, make sure to use Session with a capital S and include the import at the top of your blade file:

@php
    use Illuminate\Support\Facades\Session;
@endphp

@if ($message = Session::get('flash'))
    <div class="alert alert-success">
        {{ $message }}
    </div>
@endif

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Summary

• Recommended: Use the session() helper.
• Only use Session::get() if you import the Session facade and use correct casing.

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So just change:

@if($message = session::get('flash'))

to:

@if($message = session('flash'))

or, if you want the facade:

@php
    use Illuminate\Support\Facades\Session;
@endphp

@if($message = Session::get('flash'))

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Let me know if you have any further questions!