Question: I want to create android app about an article that contains 30 chapters so i am to make 30 buttons every button will contain different text stories so please tell me how can i show these 30 buttons in list view instead of showing in normal linear layout of vertical orientation please help me out?

Answer: 
You need to run

```
php artisan migrate:rollback

```

if that also fails just go in and drop all the tables which you may have to do as it seems your migration table is messed up or your roles table when you ran a previous rollback did not drop the table. 

or you can use `migrate:reset` command will roll back all of your application's migrations:

```
php artisan migrate:reset

```
remove the table from the database ( I did it manually the first time I had this issue)

and make this change in the create\_users\_table migration as such

```
$table->string('email', 60)->unique();

```

and this worked for me..

Hope this helps you as well