fix(cli): print migrate errors to stderr

The Migrate dispatcher logged exceptions through logger.error and then
exited with status 1, but the package logger uses NullHandler by
default so the user's terminal saw a silent non-zero exit. Print the
exception message to stderr in addition to logging it so failures
(e.g. plan-time validation errors) are always visible.

Author: nkanu17

redisvl/cli/migrate.py

@@ -73,6 +73,7 @@ def __init__(self):
         try:
             getattr(self, command)()
         except Exception as e:
+            print(f"Error: {e}", file=sys.stderr)
             logger.error(e)
             sys.exit(1)