Catch error when the section is unrecognised

Author: Pierre-Sassoulas

pylint/config/option_manager_mixin.py

@@ -311,7 +311,11 @@ def load_config_file(self):
         options provider)"""
         parser = self.cfgfile_parser
         for section in parser.sections():
-            for option, value in parser.items(section):
+            try:
+                items = parser.items(section)
+            except ValueError:
+                print(f"Unexpected value '{section}' is not a recognized option.")
+            for option, value in items:
                 try:
                     self.global_set_option(option, value)
                 except (KeyError, optparse.OptionError):