The Angular Error That Kept Scratching My Head: NG02100

A developer encounters the mysterious Angular NG02100 error while building a notification drawer. The error occurred randomly when rendering notifications, making it difficult to debug. After hours of investigation, the root cause was discovered: the backend had changed from sending ISO timestamps to human-readable strings, but the Angular date pipe was still trying to parse them as dates. The solution was simple - remove the date pipe - but finding the issue was challenging due to the vague error message and lack of clear stack trace pointing to the template.