(node:25405) UnhandledPromiseRejectionWarning: TypeError: Found non-callable @@iterator
    at arr.forEach.item (./node_modules/@nlpjs/lang-en/src/tokenizer-en.js:55:16)
    at Array.forEach (<anonymous>)
    at TokenizerEn.replaceContractions (./node_modules/@nlpjs/lang-en/src/tokenizer-en.js:52:9)
    at TokenizerEn.innerTokenize (./node_modules/@nlpjs/lang-en/src/tokenizer-en.js:66:17)
    at TokenizerEn.tokenize (./node_modules/@nlpjs/core/src/tokenizer.js:56:17)
    at Tokenizer.run (./node_modules/@nlpjs/core/src/tokenizer.js:63:30)
    at DefaultCompiler.executeReference (./node_modules/@nlpjs/core/src/default-compiler.js:154:37)
    at DefaultCompiler.executeAction (./node_modules/@nlpjs/core/src/default-compiler.js:282:21)
    at DefaultCompiler.execute (./node_modules/@nlpjs/core/src/default-compiler.js:310:26)
    at process._tickCallback (internal/process/next_tick.js:68:7)
(node:25405) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:25405) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.