improve optional dependency error message

Author: yzhu0

src/sagemaker/lineage/_utils.py

@@ -40,9 +40,13 @@ def get_module(module_name):
     """Import a module.
 
     Args:
-        module_name (str): N_utiame of the module to importt.
+        module_name (str): name of the module to import.
 
     Returns:
-        [obj]: The imported module
+        [obj]: The imported module.
+        Raises exceptions when the module name is not found
     """
-    return import_module(module_name)
+    try:
+        return import_module(module_name)
+    except ImportError:
+        raise Exception("Cannot import module {}, please try again.".format(module_name))