Compilation error: 'DefaultNetwork' does not name a type, Help!

[NewUser09]

C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:31:1: error: 'DefaultNetwork' does not name a type
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:32:1: error: 'UserAuth' does not name a type
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:35:1: error: 'AsyncClient' does not name a type
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:36:1: error: 'Firestore' does not name a type
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino: In function 'void printError(AsyncResult&)':
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:70:83: error: 'class AsyncResult' has no member named 'appError'; did you mean 'FirebaseError AsyncResult::lastError'? (accessible via 'FirebaseError& AsyncResult::error()')
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino: In function 'void setup()':
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:97:17: error: 'aClient' was not declared in this scope; did you mean 'Client'?
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:97:39: error: 'user_auth' was not declared in this scope
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:97:51: error: 'aResult_no_callback' was not declared in this scope
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:99:14: error: 'Firestore' was not declared in this scope
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:99:7: error: parse error in template argument list
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:99:36: error: 'docs' was not declared in this scope
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino: In function 'void uploadToFirestore(float, float)':
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:211:3: error: 'docs' was not declared in this scope; did you mean 'doc'?
C:\Users\sonja\OneDrive\文档\Esp32\firestore_mqtt\firestore_mqtt.ino:211:23: error: 'aClient' was not declared in this scope; did you mean 'Client'?
exit status 1

Compilation error: 'DefaultNetwork' does not name a type

[mobizt]

The code you are using or found from tutorial website and blog is outdated.

There is no network classes implemented in this library anymore.

Please see the example for how to use library correctly.

https://github.com/mobizt/FirebaseClient/tree/main/examples