[chore]: include exception info for custom-node loading errors

Author: dsisco11

invokeai/app/invocations/custom_nodes/__init__.py

@@ -25,11 +25,12 @@
         continue
 
     try:
-        logger.info(f"Mounting custom-node package for development {pkg_name!r}")
+        logger.info(f"Loading custom-node package for development {pkg_name!r}")
         importlib.import_module(pkg_name)
         loaded += 1
     except Exception as e:
-        logger.error(f"Failed to import {pkg_name!r}: {e}")
+        logger.error(f"Failed to load {pkg_name!r}: {e}", exc_info=True)
+        continue
 
 if loaded:
-    logger.info(f"Loaded {loaded} custom-node package(s) from {src_path!r}")
+    logger.info(f"Loaded {loaded} custom-node package(s)")