Fix bugs

Author: Blanca-Fuentes

reframe/core/modules.py

@@ -750,7 +750,7 @@ def _do_validate(self):
         modulecmd = os.getenv('MODULESHOME')
         if modulecmd is None:
             raise ConfigError(
-                f'could not find a sane TMod31 installation: {e}'
+                'could not find a sane TMod31 installation'
             )
         try:
             modulecmd = os.path.join(modulecmd, 'modulecmd.tcl')

reframe/core/schedulers/slurm.py

@@ -923,6 +923,7 @@ def _find_devices(self, node_feats: list) -> Union[dict, None]:
                                 'the configuration file.')
             return None
         else:
+            devices = []
             for device_i in devices_raw:
                 devices = [item.rsplit(':', 1)[0] for item in device_i]
             devices = [','.join(devices)]