kotlin --Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type (Mutable)Map<String!, Any!>?

[CMingTseng]

Dear Sir

Because Android Studio gradle check

document.data <---much class get error

reason : Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type (Mutable)Map<String!, Any!>?

THX

[appitiza]

Hi Thanks for the update,,I appreciate that.I did not maintain this project for quite long time.Even the firebase has evolved long way after creating this project.I will upload a new sample app based on new implementation.Once again thank you for the comment.Will look into it.

…

On Fri 8 Mar, 2019, 10:38 AM Neo, ***@***.***> wrote: Dear Sir Because Android Studio gradle check document.data <---much class get error reason : Only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type (Mutable)Map<String!, Any!>? THX — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AL-cjDyedfHvkh6j5ERBM1HAUJamhLs9ks5vUhNfgaJpZM4bk0bw> .