Explicit translation for errors

energy_selfconsumption/wizards/distribution_table_import_wizard.py

@@ -26,7 +26,7 @@ class DistributionTableImportWizard(models.TransientModel):
         if self.fname:
             format = str(self.fname.split(".")[1])
             if format != 'csv':
-                raise ValidationError("Only csv format files are accepted.")
+                raise ValidationError(_("Only csv format files are accepted."))
 
     def import_file_button(self):
         file_data = base64.b64decode(self.import_file)

energy_selfconsumption/wizards/selfconsumption_import_wizard.py

@@ -39,7 +39,7 @@ class SelfconsumptionImportWizard(models.TransientModel):
     def _constrains_import_file(self):
         format = str(self.fname.split(".")[1])
         if format != "csv":
-            raise ValidationError("Only csv format files are accepted.")
+            raise ValidationError(_("Only csv format files are accepted."))
 
     def import_file_button(self):
         error_string_list = ""