Add catch for Wifi cell

README.rst

@@ -128,6 +128,9 @@ on Debian/Ubuntu you need to install first the *python-dev* package.
 For Fedora/CentOS/RHEL install first *python-devel* package. For Windows,
 just install psutil from the binary installation file.
 
+*Note 2 (for the Wifi plugin)*: If you want to use the Wifi plugin, you need
+to install the *wireless-tools* package on your system.
+
 You can also install the following libraries in order to use optional
 features (like the Web interface, exports modules, sensors...):
 

glances/plugins/glances_wifi.py

@@ -103,6 +103,10 @@ class Plugin(GlancesPlugin):
                 except InterfaceError:
                     # Not a Wifi interface
                     pass
+                except Exception as e:
+                    # Other error
+                    logger.debug("WIFI plugin: Can not grab cellule stats ({})".format(e))
+                    pass
                 else:
                     for wifi_cell in wifi_cells:
                         hotspot = {