error

[Prometheus] DB Connection succesful

[ERROR] addons/prometheus/lua/prometheus/database.lua:68: attempt to index field 'DB' (a boolean value)
  1. Callback - addons/prometheus/lua/prometheus/database.lua:68
   2. Connect - addons/prometheus/lua/prometheus/tmysql.lua:10
    3. Connect - addons/prometheus/lua/prometheus/database.lua:77
     4. fn - addons/prometheus/lua/prometheus/init.lua:181
      5. unknown - addons/ulib/lua/ulib/shared/hook.lua:110