error: missing binary operator before token "("

[structai]

In the GCS.cpp file, Arduino: 1.8.19 (Windows 10), Board: "DOIT ESP32 DEVKIT V1, 80MHz, 921600, None"

C:\Users\TECH\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src\gcs\GCS.cpp:1675:82: error: missing binary operator before token "("

#if defined(ESP_ARDUINO_VERSION)&& (ESP_ARDUINO_VERSION > ESP_ARDUINO_VERSION_VAL(2, 0, 1)) ut->mbfs->remove(req->localFileName, mbfs_type req->storageType);

                                                                              ^

C:\Users\TECH\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src\gcs\GCS.cpp:1945:82: error: missing binary operator before token "("

#if defined(ESP_ARDUINO_VERSION) && ESP_ARDUINO_VERSION > ESP_ARDUINO_VERSION_VAL(2, 0, 1)

                                                                              ^

C:\Users\TECH\Documents\Arduino\libraries\Firebase_Arduino_Client_Library_for_ESP8266_and_ESP32\src\gcs\GCS.cpp:1961:82: error: missing binary operator before token "("

#if defined(ESP_ARDUINO_VERSION) && ESP_ARDUINO_VERSION > ESP_ARDUINO_VERSION_VAL(2, 0, 1)

...
Error compiling for board DOIT ESP32 DEVKIT V1.

[mobizt]

The problems of multiple methods of library installation.

You should remove all Firebase libraries in Arduino's libraries folder and install library again from Library Manager.

[mobizt]

Do you ever use ESP32?

You should add the Additional Board Manager URLs in the Preferences window.

https://docs.espressif.com/projects/arduino-esp32/en/latest/installing.html

[structai]

Thanks. Now it works, I can upload files. but after migrate from previous Firebase library can't read strings from RTDB, I get error "Missing required credentials"

[mobizt]

Follow the examples, There are more than 100 examples available with full documentation.

[structai]

Thanks for the explanation, now I can upload files,
about the polling, in all examples the check for new messages happens every 15 seconds, and I need an immediate response.
When I polling every 0.4 seconds, the daily traffic is 100MBytes.
Can I use push notifications for data changes in firebase like it works with android ?

[mobizt]

I don't know what you mean. Please use the words about the Firebase service and products more precisely.

No one understand what is general term of "message" in your post.

For RTDB https://github.com/mobizt/Firebase-ESP-Client/tree/main/examples/RTDB/DataChangesListener

For Firestore, it's not available in REST API.

For FCM, it is the not mobile device to get message.

Please look to the examples provided by the library that cover all Firebase APIs.

Read the Firebase REST API documentation for the features and the concepts.