[FIX] account: Pass correct company and date to _convert on dashboard rendering

addons/account/models/account_journal_dashboard.py

@@ -241,11 +241,11 @@ class account_journal(models.Model):
         rslt_sum = 0.0
         for result in results_dict:
             cur = self.env['res.currency'].browse(result.get('currency'))
-            company = self.env['res.company'].browse(result.get('company_id'))
+            company = self.env['res.company'].browse(result.get('company_id')) or self.env.user.company_id
             rslt_count += 1
             type_factor = result.get('type') in ('in_refund', 'out_refund') and -1 or 1
             rslt_sum += type_factor * cur._convert(
-                result.get('amount_total'), target_currency, company, result.get('date') or fields.Date.today())
+                result.get('amount_total'), target_currency, company, result.get('date_invoice') or fields.Date.today())
         return (rslt_count, rslt_sum)
 
     @api.multi