/home/sandy/bronzeage-node/lib/blockchain/chain.js:184
const { tiles } = yield this._bfs();
^
SyntaxError: Unexpected token {
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:374:25)
at Object.Module._extensions..js (module.js:417:10)
at Module.load (module.js:344:32)
at Function.Module._load (module.js:301:12)
at Module.require (module.js:354:17)
at require (internal/module.js:12:17)
at Object.<anonymous> (/home/sandy/bronzeage-node/lib/node/fullnode.js:15:13)
at Module._compile (module.js:410:26)
at Object.Module._extensions..js (module.js:417:10)```
anyone know how to fix?