Warning: Deprecated sync method group.all(). Please use async version

[Keekuun]

How can I avoid this warning？ But how can I use async version. Please help me.

[jonvuri]

@Keekuun Hi! Actually, it would appear that this warning is erroneous - there is no async version of group.all(), currently.

Rest assured that the synchronous, callback-accepting versions of methods that fire this warning will still work the same as their *Async counterparts that return Promises. The warnings are intended to encourage you to use the Promise versions, since that's what we are moving most of our libraries to.