Fixed error for the config file

Signed-off-by: Dimitris Zlatanidis <d.zlatanidis@gmail.com>

slpkg/configs.py

@@ -90,8 +90,9 @@ class Configs:
             # Wget options
             wget_options: str = config['wget_options']
 
-        except KeyError as err:
-            raise KeyError(f"ERROR: {err} in the configurations.")
+        except KeyError:
+            print("Error: check the configuration file "
+                  "in the '/etc/slpkg/' folder.\n")
 
     # Creating the paths if not exists
     paths = [tmp_slpkg,