When the Tokenloader is unable to find tokens for a push query the following is logged:

Check your push query: Not a single token was loaded from the DB!

Now, with GCM-3 topics, the logic is the following:

• we auto register the devices for a global topic (e.g. /topics/variantID)
• if there is send a push w/o any other criteria, the UPS sends a message to that topic

However since only new InstanceID tokens (prefix:somethingThatLooksLikeAnLegacyToken) are able to join a topic, we need to find all legacy tokens (not containing a ':' ), for those we also perfom a send, in the traditional way, by regitrationID/token

Now, in a case were the variant does only have new tokens and no legacy tokens, the same warning is printed, which is missleading.