codex has reworked checkout, but frontend doesnt work

app/Models/CheckoutSession.php

@@ -0,0 +1,106 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class CheckoutSession extends Model
+{
+    use HasFactory;
+    use HasUuids;
+    use SoftDeletes;
+
+    public const STATUS_DRAFT = 'draft';
+    public const STATUS_AWAITING_METHOD = 'awaiting_payment_method';
+    public const STATUS_REQUIRES_CUSTOMER_ACTION = 'requires_customer_action';
+    public const STATUS_PROCESSING = 'processing';
+    public const STATUS_COMPLETED = 'completed';
+    public const STATUS_FAILED = 'failed';
+    public const STATUS_CANCELLED = 'cancelled';
+
+    public const PROVIDER_NONE = 'none';
+    public const PROVIDER_STRIPE = 'stripe';
+    public const PROVIDER_PAYPAL = 'paypal';
+    public const PROVIDER_FREE = 'free';
+
+    /**
+     * The attributes that aren't mass assignable.
+     */
+    protected $guarded = [];
+
+    /**
+     * Indicates if the IDs are auto-incrementing.
+     */
+    public $incrementing = false;
+
+    /**
+     * The data type of the primary key.
+     */
+    protected $keyType = 'string';
+
+    /**
+     * The attributes that should be cast.
+     */
+    protected $casts = [
+        'package_snapshot' => 'array',
+        'status_history' => 'array',
+        'provider_metadata' => 'array',
+        'expires_at' => 'datetime',
+        'completed_at' => 'datetime',
+        'amount_subtotal' => 'decimal:2',
+        'amount_total' => 'decimal:2',
+    ];
+
+    /**
+     * Default attributes.
+     */
+    protected $attributes = [
+        'status_history' => '[]',
+        'package_snapshot' => '[]',
+        'provider_metadata' => '[]',
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function tenant(): BelongsTo
+    {
+        return $this->belongsTo(Tenant::class);
+    }
+
+    public function package(): BelongsTo
+    {
+        return $this->belongsTo(Package::class);
+    }
+
+    public function scopeActive($query)
+    {
+        return $query->whereNotIn('status', [
+            self::STATUS_COMPLETED,
+            self::STATUS_CANCELLED,
+        ])->where(function ($inner) {
+            $inner->whereNull('expires_at')->orWhere('expires_at', '>', now());
+        });
+    }
+
+    public function scopeByProviderId($query, string $providerField, string $value)
+    {
+        return $query->where($providerField, $value);
+    }
+
+    public function isExpired(): bool
+    {
+        return (bool) $this->expires_at && $this->expires_at->isPast();
+    }
+
+    public function requiresCustomerAction(): bool
+    {
+        return $this->status === self::STATUS_REQUIRES_CUSTOMER_ACTION;
+    }
+}