How to Fix: Subscribe is deprecated: Use an observer instead of an error callback

Method 1: Using an Observer with Error Handling

1. Step 1: Replace the subscribe method with a pipe that uses an observer, like this:

    this.userService.updateUser(data).pipe(map((data) => { ... })), tap(() => { bla bla bla }), catchError((error) => { console.error(error); return of(null); })

Method 2: Using an Observer with a Custom Error Handler

1. Step 1: Create a custom error handler function that logs the error and returns a new observable with null values.

    const errorHandler = (error) => { console.error(error); return of(null); };

💡 Conclusion

By following these steps, you can resolve the 'Subscribe is deprecated: Use an observer instead of an error callback' error and ensure your application continues to run smoothly.