Error on write command - iOS

[mad-mikey]

Good evening everybody,
I have the following error when I try to send a write command to my esp32 using iOS devices, whereas with Android ones everything works fine.

Error unsubscribing from notifications: PlatformException(reactive_ble_mobile.Central.(unknown context at $100c27a50).Failure:1, The operation couldn’t be completed. (reactive_ble_mobile.Central.(unknown context at $100c27a50).Failure error 1.), {}, null)

Furthermore this is the exception thrown by writeWithResponse (also withoutResponse) caught using the onError function:
Exception: GenericFailure(code: WriteCharacteristicFailure.unknown, message: "Error Domain=CBErrorDomain Code=6 "The connection has timed out unexpectedly." UserInfo={NSLocalizedDescription=The connection has timed out unexpectedly.}")

flutter version:
Flutter 2.10.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 7e9793dee1 (4 months ago) • 2022-03-02 11:23:12 -0600
Engine • revision bd539267b4
Tools • Dart 2.16.1 • DevTools 2.9.2

iOS version: 15.4.1

Thank you

PS I already find out similar discussion but any of these resolved my problem, the most similar is this one:
#284

but I'm using the correct characteristic uuid, checked