SQLSTATE[42S02] lumen code example

Example 1: SQLSTATE[42S02] lumen

You need to define the table name in model as shown below.
class User extends Model
{
    //
    public $table = "products";
}

Example 2: SQLSTATE[42S02]: Base table or view not found: 1146 Tabl

It seems Laravel is trying to use category_posts table (because of many-to-many relationship). But you don't have this table, because you've created category_post table. Change name of the table to category_posts.

Example 3: Base table or view not found: 1146 Table

class Cotizacion extends Model{
    public $table = "cotizacion";