Enhance logger to handle Error objects separately in debug mode

- Modified the logger to check if the data is an instance of Error.
- If it is an Error, the logger now formats the output to include the message and stack trace in debug mode, or just the message otherwise.
- Retained the existing behavior for other object types in debug mode.

src/utils/logger.ts

@@ -237,7 +237,12 @@ class Logger {
     // Build data part
     let dataStr = '';
     if (data !== undefined && data !== null) {
-      if (this.getLevel() === LogLevel.DEBUG && typeof data === 'object') {
+      // Handle Error objects specially - they don't JSON.stringify properly
+      if (data instanceof Error) {
+        dataStr = this.getLevel() === LogLevel.DEBUG
+          ? `\n${data.message}\n${data.stack}`
+          : ` ${data.message}`;
+      } else if (this.getLevel() === LogLevel.DEBUG && typeof data === 'object') {
         // In debug mode, show full JSON for objects
         dataStr = '\n' + JSON.stringify(data, null, 2);
       } else {