[BACKEND] Include yaml exception in error

src/ytdl_sub/utils/yaml.py

@@ -38,9 +38,9 @@ def load_yaml(file_path: str | Path) -> Dict:
         with open(file_path, "r", encoding="utf-8") as file:
             output = yaml.safe_load(file)
     except YAMLError as yaml_exception:
-        logger.debug(yaml_exception)
         raise InvalidYamlException(
-            f"'{file_path}' has invalid YAML, copy-paste it into a YAML checker to find the issue."
+            f"'{file_path}' has invalid YAML:\n{yaml_exception}\n\n"
+            f"Copy-pasting it into a YAML parser can also help find the issue."
         ) from yaml_exception
 
     if not isinstance(output, dict):