Android Question [Solved]Error building bundle

[DataMiser]

I was able to build the bundle just a couple days ago but today I try to build it and get the following error message.

B4A Version: 10.70
Parsing code. (0.05s)
Java Version: 11
Building folders structure. (0.01s)
Running custom action. (0.04s)
Compiling code. (0.06s)
Compiling layouts code. (0.01s)
Organizing libraries. (0.00s)
(AndroidX SDK)
Compiling resources (0.37s)
Linking resources (0.38s)
Compiling generated Java code. (2.12s)
Convert byte code - optimized dex. (1.69s)
Copying libraries resources (0.32s)
Building app bundle (0.92s)
Signing AAB file Error
Private signing key not set

I have only made a couple of minor changes to the code since the last time it built successfully.
One was to correct a typo in the name of a edit box and the other to correct a case where a field was sometimes being skipped over.
App compiles in release mode and runs just fine on the device.

I had never saw this message before so not sure what to look at to try and resolve it.

 

[DataMiser]

Never mind, I figured it out. I had to create a key, I do not remember having did this before but had never saw that message before. I guess maybe I had been using the debug key before without knowing it.