[FIX] correcion en el archivo timesheet.py - material_id

models/timesheet.py

@@ -47,7 +47,7 @@ class MaterialUsed (models.Model):
     material = fields.Many2one('product.template', string='Productos', domain=[('sale_ok','=',True)])
     amount = fields.Integer(string='Cantidad', default=1)
     price = fields.Float(string='Precio Unitario')
-    material_id = fields.Many2one(string='car.workshop')
+    material_id = fields.Many2one('car.workshop', string='Material')
 
     @api.onchange('material')
     def get_price(self):