XCode console: WARNING! Sole personality is ambiguous; this may lead to erradic behavior - in Keyboard Extension

Question

I am have iOS app that consist of custom keyboard extension and its container app. When I try to debug the custom keyboard extension I get the following, rather disturbing log in the XCode console:

EasyType Keyboard[84937:5754706] [lifecycle] [u 9061FF85-F4D2-401A-94C2-73377E20E419] [com.easytype.EasyType.Keyboard(1.7.1)] WARNING! Sole personality is ambiguous; this may lead to erradic behavior; personalities: {
    "com.easytype.EasyType.Keyboard" =     {
        685 = "<PKServicePersonality: 0x283175340; core = <PKPlugInCore: 0x283175340; uuid = [9061FF85-F4D2-401A-94C2-73377E20E419], identifier = [com.easytype.EasyType.Keyboard(1.7.1)], isAppExtension = 1, onSystemVolume = 0, containingBundle = [(null)], lastModified = 0, discoveryInstanceUUID = [(null)], path = [/private/var/containers/Bundle/Application/762C0B3C-A600-4AB4-AB84-AB2019FA053C/EasyType.app/PlugIns/EasyType Keyboard.appex]>, host pid = 685>";
        84881 = "<PKServicePersonality: 0x2831782a0; core = <PKPlugInCore: 0x2831782a0; uuid = [DAEEF528-9AB6-4482-95E9-03E6BB353BBD], identifier = [com.easytype.EasyType.Keyboard(1.7.1)], isAppExtension = 1, onSystemVolume = 0, containingBundle = [(null)], lastModified = 0, discoveryInstanceUUID = [(null)], path = [/private/var/containers/Bundle/Application/762C0B3C-A600-4AB4-AB84-AB2019FA053C/EasyType.app/PlugIns/EasyType Keyboard.appex]>, host pid = 84881>";
    };
}

com.easytype.EasyType.Keyboard is bundle ID of the keyboard extension. The project was dormant for a while, this log started to show when I started work on it again. How can I fix this?

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EDIT

There also another version of the log, that appears above the more common log sometimes:

EasyType Keyboard[85190:5767015] [lifecycle] WARNING! Sole personality requested when nil; THIS MAY BE A SPURIOUS LAUNCH OF THE PLUGIN due to a message to an XPC endpoint other than the main service endpoint; personalities: {
    "com.easytype.EasyType.Keyboard" =     {
        79474 = "<PKServicePersonality: 0x2828c0700; core = <PKPlugInCore: 0x2828c0700; uuid = [706FFAE3-DC72-4DBB-AC32-C2CFFD0BD992], identifier = [com.easytype.EasyType.Keyboard(1.7.1)], isAppExtension = 1, onSystemVolume = 0, containingBundle = [(null)], lastModified = 0, discoveryInstanceUUID = [(null)], path = [/private/var/containers/Bundle/Application/648263C7-603F-458E-AB8D-9109DD2C0D80/EasyType.app/PlugIns/EasyType Keyboard.appex]>, host pid = 79474>";
    };
}