The POST method is not supported for this route. Supported methods: GET, HEAD. Laravel 9

First off, I'm a beginner and I know this question has been asked a few times, and answered. I've attempted the solutions, or I've had the suggestion implemented, so I've come here for help from the experts!

What I've tried: -Adding @csrf to my blade file inside my form element. -Checking that my post and get's in my routes are lowercase. -Changing the gets to post and so fourth.

The above has not helped in solving the problem, and alas I'm still scratching my head.

Effectively, I'm trying to upload an image, give the image a caption and submit. It should go to another page displaying the data in a drop down in the top left hand corner, but I'm greeted with the image in the title.

EDIT: Solution: I ran the following and it removed the error:

php artisan route:clear

I've included images below of the error and my folder structure:

Image of error appearing. Project directory structure

Here's the code:

Web.php

<?php

use Illuminate\Support\Facades\Route;


Route::get('/', function () {
    return view('welcome');
});

Auth::routes();

Route::get('/p/create', 'App\Http\Controllers\PostsController@create');

Route::post('/p/', 'App\Http\Controllers\PostsController@store');

Route::get('profile/{user}', 'App\Http\Controllers\ProfilesController@index')- 
>name('profile.show');

PostsController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\User;

class PostsController extends Controller
{

public function constructor()
{
    $this->middleware['auth'];
}


public function create()
{
    return view('posts.create');
}


public function store() {
    $data = request()->validate([
    'caption' => 'required',
    'image' => 'required|image',
    ]);

    dd(request('image')->store('uploads','public'));

    auth()->user()->posts()->create($data);

    dd(request()->all());
 }
}

Model/Posts.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

views/posts/create.blade.php

@extends('layouts.app')

@section('content')

<div class="container">
    <form action="/p" enctype="multipart/form-data" method="post">
     @csrf
    <div class="row">

        <div class="col-8 offset-2">
            <div class="row mb-3">
                <div class="row pt-5">
                    <h1>Add New Post</h1>
                </div>

                <label for="caption" class="col-md-4 col-form-label">Post Caption</label>


                <input id="caption"
                       type="text"
                       class="form-control @error('caption') is-invalid @enderror"
                       name="caption"
                       value="{{ old('caption') }}"
                       autocomplete="caption" autofocus>

                @error('caption')
                        <strong>{{ $message }}</strong>
                @enderror


        </div>
        <div class="row">
            <label for="image" class="col-md-4 col-form-label">Post Image</label>
            <input type="file" class="form-control-file" id="image" name="image">

            @error('image')
            <strong>{{ $message }}</strong>
            @enderror


            <div class="pt-3">
                <button class="btn btn-primary btn-sm">Add New Post</button>
            </div>





            </div>
        </div>
    </div>


</form>

Thank you in advance for your help!