Enhance Code quality: Add Null Check

[arkaprovob]

Description:
To improve code robustness, let's add a null check for the result parameter in the processK8sList function. This check will prevent potential exceptions. Apply this logic wherever applicable in our codebase.

Benefits:

• Enhanced code robustness.
• Avoid potential null pointer exceptions.

Implementation:

1. Add a null check for the result parameter.
2. Apply the same logic wherever applicable in the codebase.

Reference
#36 (comment)