response when using my config.yaml

parsoid3

root@9f85ddc6532d:/var/lib/parsoid# echo '[[File:script_step2b.png|1200px]]' | bin/parse.js --config ./config.yaml --trace apirequest
/var/lib/parsoid/node_modules/prfun/lib/index.js:424
      setTimeout(function() { throw e; }, 0);
                              ^

Error: No API URI available for prefix: null; domain: en.wikipedia.org
    at Function.<anonymous> (/var/lib/parsoid/lib/config/MWParserEnvironment.js:489:9)
    at Generator.next (<anonymous>)
    at tryCatchNext (/var/lib/parsoid/node_modules/prfun/lib/index.js:783:28)
    at continuer (/var/lib/parsoid/node_modules/prfun/lib/index.js:800:24)
    at callback (/var/lib/parsoid/node_modules/prfun/lib/index.js:812:43)
    at /var/lib/parsoid/node_modules/prfun/lib/index.js:814:9
    at tryCatch2 (/var/lib/parsoid/node_modules/babybird/lib/promise.js:48:12)
    at PrFunPromise.Promise (/var/lib/parsoid/node_modules/babybird/lib/promise.js:458:15)
    at new PrFunPromise (/var/lib/parsoid/node_modules/prfun/lib/index.js:100:21)
    at Function.getParserEnv (/var/lib/parsoid/node_modules/prfun/lib/index.js:797:21)
    at /var/lib/parsoid/lib/parse.js:133:28
    at Generator.next (<anonymous>)
    at tryCatchNext (/var/lib/parsoid/node_modules/prfun/lib/index.js:783:28)
    at continuer (/var/lib/parsoid/node_modules/prfun/lib/index.js:800:24)
    at callback (/var/lib/parsoid/node_modules/prfun/lib/index.js:812:43)
    at /var/lib/parsoid/node_modules/prfun/lib/index.js:814:9