Issue Running Node Index.js

[CPTNLEVI]

PS C:\Users\compt\Downloads\hashlips_art_engine-main> node index.js
C:\Users\compt\Downloads\hashlips_art_engine-main\src\main.js:94
layerObj.options?.["displayName"] != undefined
^

SyntaxError: Unexpected token '.'
at Module._compile (internal/modules/cjs/loader.js:892:18)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
at Module.load (internal/modules/cjs/loader.js:812:32)
at Function.Module._load (internal/modules/cjs/loader.js:724:14)
at Module.require (internal/modules/cjs/loader.js:849:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object. (C:\Users\compt\Downloads\hashlips_art_engine-main\index.js:2:39)
at Module._compile (internal/modules/cjs/loader.js:956:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
at Module.load (internal/modules/cjs/loader.js:812:32)

I keep getting this error trying to generate. Any solutions are much appreciated