Cannot read property 'length' of undefined

[pbassut]

/Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/index.js:124 TypeError: Cannot read property 'length' of undefined
    at Object.exports.measure (/Users/patrickbassut/Programming/icr-api/node_modules/express-latency/lib/latency.js:56)
    at server.js? [sm]:226
    at /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/index.js:85
    at cbWrapper (/Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1035)
    at validateSwagger2_0 (/Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1030)
    at validateSemantically (/Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1040)
    at /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1233
    at /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1073
    at /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:719
    at /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:695
    at <anonymous>
(anonymous) @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/index.js:124
cbWrapper @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1035
validateSwagger2_0 @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1030
validateSemantically @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1040
(anonymous) @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1233
(anonymous) @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:1073
(anonymous) @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:719
(anonymous) @ /Users/patrickbassut/Programming/icr-api/node_modules/swagger-tools/lib/specs.js:695
wrappedHandler @ /Users/patrickbassut/Programming/icr-api/node_modules/async-hook-jl/patches/promise.js:28
16:32:04.238