FilterError: uglifyjs: subprocess returned a non-success result code: 1, stdout=, stderr=Parse error at /tmp/tmpkVC3ST:22016,0
Unexpected token: punc (})
Error
    at new JS_Parse_Error (/usr/lib/node_modules/uglify-js@2/lib/parse.js:196:18)
    at js_error (/usr/lib/node_modules/uglify-js@2/lib/parse.js:204:11)
    at croak (/usr/lib/node_modules/uglify-js@2/lib/parse.js:663:9)
    at token_error (/usr/lib/node_modules/uglify-js@2/lib/parse.js:671:9)
    at unexpected (/usr/lib/node_modules/uglify-js@2/lib/parse.js:677:9)
    at /usr/lib/node_modules/uglify-js@2/lib/parse.js:761:17
    at /usr/lib/node_modules/uglify-js@2/lib/parse.js:710:24
    at /usr/lib/node_modules/uglify-js@2/lib/parse.js:1445:23
    at Object.parse (/usr/lib/node_modules/uglify-js@2/lib/parse.js:1455:7)
    at /usr/lib/node_modules/uglify-js@2/bin/uglifyjs:277:41