デプロイ後の新規会員登録

＊前提、実現したいこと
laravelでオリジナルアプリの作成をしていてherokuでデプロイをしました。

＊つまづいたこと
デプロイ後新規会員登録をしようとするとエラーがでできます。
https://gyazo.com/46474a84bc00354b7d7f8ef025267373

＊該当するコード

php
1public function up()
2    {
3        Schema::create('users', function (Blueprint $table) {
4            $table->increments('id');
5            $table->string('name');
6            $table->string('email')->unique();
7            $table->string('password');
8            $table->rememberToken();
9            $table->timestamps();
10        });
11    }

php
1public function up()
2    {
3        Schema::table('users', function (Blueprint $table) {
4            $table->string('gender');
5            $table->integer('age');
6        });
7
8        Schema::table('users', function ($table){
9            $table->string('stripe_id')->nullable();
10            $table->string('card_brand')->nullable();
11            $table->string('card_last_four')->nullable();
12            $table->timestamp('trial_ends_at')->nullable();
13        });
14
15        Schema::create('subscriptions', function ($table){
16            $table->increments('id');
17            $table->integer('user_id');
18            $table->string('name');
19            $table->string('stripe_id');
20            $table->string('stripe_plan');
21            $table->integer('quantity');
22            $table->timestamp('trial_ends_at')->nullable();
23            $table->timestamp('ends_at')->nullable();
24            $table->timestamps();
25        });

php
1protected function create(array $data)
2    {
3
4        return User::create([
5            'name' => $data['name'],
6            'gender' => $data['gender'],
7            'age' => $data['age'],
8            'email' => $data['email'],
9            'password' => Hash::make($data['password']),
10        ]);
11    }