Issue at NPM start

[TGrandjeanLIST]

Very very very good demo for newbies !!!!!

Having the following issue at startup .... Any ideas ?

Thanks !!

/home/*******/blockchain-demo/node_modules/fast-printf/dist/src/tokenize.js:4
const TokenRule = /(?:%(?([+0-]|-+))?(?\d+)?(?\d+$)?(?.\d+)?(?[%BCESb-iosux]))|(\%)/g;
^

SyntaxError: Invalid regular expression: /(?:%(?([+0-]|-+))?(?\d+)?(?\d+$)?(?.\d+)?(?[%BCESb-iosux]))|(\%)/: Invalid group
at Object. (/home/*/blockchain-demo/node_modules/fast-printf/dist/src/tokenize.js:4:19)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Module.require (module.js:597:17)
at require (internal/module.js:11:18)
at Object. (/home//blockchain-demo/node_modules/fast-printf/dist/src/createPrintf.js:5:20)
at Module._compile (module.js:653:30)

[TGrandjeanLIST]

Ok Docker version is working fine.