Fix bug that would be triggered upon code refresh.

aiidalab · Jul 19, 2021 · b7d8243 · b7d8243
1 parent 5324334
commit b7d8243
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/aiidalab_qe/steps.py b/aiidalab_qe/steps.py
@@ -397,6 +397,9 @@ def _set_num_mpi_tasks_to_default(self, _=None):
 
     def _check_resources(self):
         """Check whether the currently selected resources will be sufficient and warn if not."""
+        if not self.codes_selector.pw.selected_code:
+            return  # No code selected, nothing to do.
+
         num_mpi_tasks = self.resources_config.num_mpi_tasks.value
         on_localhost = (
             self.codes_selector.pw.selected_code.computer.get_hostname() == "localhost"