old_contents: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from odoo import api, models
  
  class HrPayslipEmployees(models.TransientModel):
      _inherit = 'hr.payslip.employees'
  
      @api.multi
      def compute_sheet(self):
          journal_id = False
          if self.env.context.get('active_id'):
              journal_id = self.env['hr.payslip.run'].browse(self.env.context.get('active_id')).journal_id.id
          return super(HrPayslipEmployees, self.with_context(journal_id=journal_id)).compute_sheet()
  
new_contents: # -*- coding: utf-8 -*-
  # Part of Odoo. See LICENSE file for full copyright and licensing details.
  
  from odoo import api, models
  
  class HrPayslipEmployees(models.TransientModel):
      _inherit = 'hr.payslip.employees'
  
      @api.multi
      def compute_sheet(self):
          if self.env.context.get('active_id'):
              journal_id = self.env['hr.payslip.run'].browse(self.env.context.get('active_id')).journal_id.id
              return super(HrPayslipEmployees, self.with_context(journal_id=journal_id)).compute_sheet()
          return super(HrPayslipEmployees, self).compute_sheet()
  
subject: Remove journal_id: False in context