probably during alterac playground?

1x DBM-GUI/modules/options/dev/Dev.lua:139: no tests installed
[string "=[C]"]: in function `error'
[string "@DBM-GUI/modules/options/dev/Dev.lua"]:139: in function <DBM-GUI/modules/options/dev/Dev.lua:133>

Locals:
(*temporary) = "no tests installed"

correct don't enable playground mode in pvp mods. that's not supported