Log exception message when parsing component graph fails

Signed-off-by: Tiyash Basu <[email protected]>

Author: tiyash-basu-frequenz

src/frequenz/sdk/microgrid/_graph.py

@@ -491,6 +491,7 @@ def refresh_from(
         try:
             _provisional.validate()
         except Exception as err:
+            _logger.error("Failed to parse component graph: %s", err)
             raise InvalidGraphError(
                 "Cannot populate component graph from provided input!"
             ) from err