Method 'phasers' not found for invocant of class 'Code'

[cognominal]

Can't run the demo

$ perl6 eg/chat.pl6 --port=8080
http server is ready: http://127.0.0.1:8080/ (pid:82842)
request: /
request: /echo2
[ERROR] [82842] [11] Method 'phasers' not found for invocant of class 'Code' in method tap at gen/moar/m-CORE.setting line 33837
in method tap at gen/moar/m-CORE.setting line 32309
in method Channel at gen/moar/m-CORE.setting line 32811
in block at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 438
in block at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 431
in block at gen/moar/m-CORE.setting line 13078
in method pull-one at gen/moar/m-CORE.setting line 13094
in method sink-all at gen/moar/m-CORE.setting line 4168
in method sink at gen/moar/m-CORE.setting line 12853
in method send-response at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 323
in method run-app at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 252
in block at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 219
in method parse-body at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 167
in method handle at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 88
in block at /Users/cog/share/perl6/site/sources/57CD93174612D6EAC1BFD1C837C1E00CDC5D99B8 (HTTP::Server::Tiny) line 495
in block at gen/moar/m-CORE.setting line 32434
in block at gen/moar/m-CORE.setting line 32405
in method protect at gen/moar/m-CORE.setting line 31544
in block at gen/moar/m-CORE.setting line 32405
in block at gen/moar/m-CORE.setting line 33645
in method emit at gen/moar/m-CORE.setting line 33642
in method emit at gen/moar/m-CORE.setting line 33682
in block at gen/moar/m-CORE.setting line 34229
in method emit-events at gen/moar/m-CORE.setting line 3045
in block at gen/moar/m-CORE.setting line 3033
in block at gen/moar/m-CORE.setting line 3028
in method protect at gen/moar/m-CORE.setting line 31544
in method process at gen/moar/m-CORE.setting line 3025
in block at gen/moar/m-CORE.setting line 34232
in block at gen/moar/m-CORE.setting line 31688
in block at gen/moar/m-CORE.setting line 31685
in block at gen/moar/m-CORE.setting line 31684
in block at gen/moar/m-CORE.setting line 31681