Receiving error on v2.6.0

[projectmallwall]

We are receiving the below error on v2.6.0. On v 2.5.2 this never happened. Could you please check?

/node_modules/gulp-strip-comments/index.js:25
);
^
SyntaxError: Unexpected token )
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at /smbufs1/build_myit/rbuild/bsmapps/smartit/CI-SMARTIT-UC-GITHUB-BUILD/release-22108/gulpfile.js:6:11
at Object. (/smbufs1/build_myit/rbuild/bsmapps/smartit/CI-SMARTIT-UC-GITHUB-BUILD/release-22108/gulpfile.js:828:3)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)