Bug fixed: exception when process lost and network usage metrics

src/client.py

@@ -152,7 +152,11 @@ class Client:
         running_vms = []
         procList = psutil.get_process_list()
         for entry in procList:
-            if entry.name in "kvm":
+            try:
+                entry_name = entry.name
+            except psutil._error.NoSuchProcess:
+                entry_name = ""
+            if entry_name in "kvm":
                 cmdLine = entry.as_dict()["cmdline"]
                 search = [cmd_param_index for cmd_param_index, cmd_param in
                           enumerate(cmdLine)