Hi.
It is a file provided in the FirebaseClient library that contains several useful functions you can use in your exmaples: https://github.com/mobizt/FirebaseClient/blob/main/src/ExampleFunctions.h
Instead of having the write and define the functions in the main code, you can simply include that file and then make a call to the library.

Regards,
Sara

Hi Steve.
This was a recent library update.
The code was previously working a couple of weeks ago.

Now, all codes should be working.

Regards,
Sara

Thank you so much for taking time to reply and put the additional define statements into the code (I would never have resolved that myself!). It now works fine – I’ve never been so excited and pleased to see an LED light up!!

It’s curious to me that this issue had not cropped up before: perhaps others who encountered the same problem had the knowledge to work out what was wrong and fixed it without telling anyone!

Thanks again….

Hi.
I updated the code.
Now you need to include this right at the start of your code, before including the libraries

#define ENABLE_USER_AUTH
#define ENABLE_DATABASE

Regards,
Sara

Thanks for this tutorial – I tried to compile the code but get this error:
Compilation error: ‘UserAuth’ does not name a type
There are numerous other errors listed in the compiler output, but I’m wondering if solving the single error will deal with the others?!
FYI – I copied the raw code, and I’m not proficient enough in programming to deal with this error; can you help me get over this!?

Thanks again for the work you do – I’ve used several of your tutorials, they have helped enormously…

Thanks, Steve

The full compiler error output is as below:
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:36:1: error: ‘UserAuth’ does not name a type
36 | UserAuth user_auth(Web_API_KEY, USER_EMAIL, USER_PASS);
| ^~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:43:1: error: ‘RealtimeDatabase’ does not name a type
43 | RealtimeDatabase Database;
| ^~~~~~~~~~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino: In function ‘void setup()’:
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:95:39: error: ‘user_auth’ was not declared in this scope
95 | initializeApp(aClient, app, getAuth(user_auth), processData, “🔐 authTask”);
| ^~~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:96:14: error: ‘RealtimeDatabase’ was not declared in this scope
96 | app.getApp(Database);
| ^~~~~~~~~~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:96:32: error: ‘Database’ was not declared in this scope
96 | app.getApp(Database);
| ^~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino: In function ‘void processData(AsyncResult&)’:
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:139:5: error: ‘RealtimeDatabaseResult’ was not declared in this scope
139 | RealtimeDatabaseResult &RTDB = aResult.to();
| ^~~~~~~~~~~~~~~~~~~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:139:29: error: ‘RTDB’ was not declared in this scope
139 | RealtimeDatabaseResult &RTDB = aResult.to();
| ^~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:139:70: error: no matching function for call to ‘AsyncResult::to()’
139 | RealtimeDatabaseResult &RTDB = aResult.to();
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
In file included from /Users/steveknell/Documents/Arduino/libraries/FirebaseClient/src/./core/Auth/AuthConfig.h:13,
from /Users/steveknell/Documents/Arduino/libraries/FirebaseClient/src/./core/FirebaseApp.h:11,
from /Users/steveknell/Documents/Arduino/libraries/FirebaseClient/src/FirebaseClient.h:27,
from /private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:19:
/Users/steveknell/Documents/Arduino/libraries/FirebaseClient/src/./core/AsyncResult/AsyncResult.h:291:8: note: candidate: ‘template T& AsyncResult::to()’
291 | T &to()
| ^~
/Users/steveknell/Documents/Arduino/libraries/FirebaseClient/src/./core/AsyncResult/AsyncResult.h:291:8: note: template argument deduction/substitution failed:
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:147:45: error: expected primary-expression before ‘const’
147 | Firebase.printf(“data: %s\n”, RTDB.to());
| ^~~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:153:38: error: expected primary-expression before ‘>’ token
153 | Serial.println(RTDB.to());
| ^
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:153:40: error: expected primary-expression before ‘)’ token
153 | Serial.println(RTDB.to());
| ^
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:156:73: error: expected primary-expression before ‘>’ token
156 | DeserializationError error = deserializeJson(doc, RTDB.to());
| ^
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:156:75: error: expected primary-expression before ‘)’ token
156 | DeserializationError error = deserializeJson(doc, RTDB.to());
| ^
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:176:30: error: expected primary-expression before ‘bool’
176 | bool state = RTDB.to();
| ^~~~
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:192:4: error: expected ‘}’ at end of input
192 | }
| ^
/private/var/folders/bx/s85xr1zd67s0zzw84mf64jtw0000gn/T/.arduinoIDE-unsaved2025527-3900-1v2v84e.pxd5/sketch_jun27a/sketch_jun27a.ino:120:40: note: to match this ‘{‘
120 | void processData(AsyncResult &aResult) {
| ^

exit status 1

Compilation error: ‘UserAuth’ does not name a type

I have same error with UniversalTelegramBot [ssl_client.cpp:37] _handle_error(): [data_to_read():361]: (-76) UNKNOWN ERROR CODE (004C)

Thanks for your feedback.
We need to update our guides to be compatible with the latest version.
Regards,
Sara

to make a long story short i could not get it to compile with the latest ESP32 Cores or the latest Firebase ESP Client.

Only esp32 core version 2.07 worked and i left it at that: And that could be a plus\minus version.
Firebase ESP Client version 4.2.7 worked . The latest version to date 4.4.15 did not compile it_

I have great respect for your work, thank you and glad to share.

Ciao