Answers for "Illuminate\Database\QueryException SQLSTATE[42S02]: Base table or view not found"

Base table or view not found: 1146 Table

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

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.