refactor - improved error

src/config/mod.rs

@@ -294,6 +294,7 @@ impl Config {
         Config::from_toml_for_style_edition(
             &toml,
             file_path.parent().unwrap(),
+            file_path,
             edition,
             style_edition,
             version,
@@ -370,13 +371,14 @@ impl Config {
     }
 
     #[allow(dead_code)]
-    pub(super) fn from_toml(toml: &str, dir: &Path) -> Result<Config, String> {
-        Self::from_toml_for_style_edition(toml, dir, None, None, None)
+    pub(super) fn from_toml(toml: &str, dir: &Path,file_path : &Path) -> Result<Config, String> {
+        Self::from_toml_for_style_edition(toml, dir,file_path, None, None, None)
     }
 
     pub(crate) fn from_toml_for_style_edition(
         toml: &str,
         dir: &Path,
+        file_path: &Path,
         edition: Option<Edition>,
         style_edition: Option<StyleEdition>,
         version: Option<Version>,
@@ -402,12 +404,22 @@ impl Config {
                 }
                 Ok(parsed_config.to_parsed_config(style_edition, edition, version, dir))
             }
-            Err(e) => {
-                err.push_str("Error: Decoding config file failed:\n");
-                err.push_str(format!("{e}\n").as_str());
-                err.push_str("Please check your config file.");
-                Err(err)
-            }
+Err(e) => {
+
+let config_file_path_str = file_path.to_string_lossy();
+
+        let err_msg = format!(
+            "The file `{}` failed to parse.\n\
+             Error details: {}\n\
+             Help: Ensure that the configuration file at `{}` is correctly formatted.",
+            config_file_path_str,
+            e,
+            config_file_path_str
+        );
+
+        Err(err_msg)
+    }
+
         }
     }
 }