TypeError: Cannot read property 'length' of undefined
    at I (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:26:6717)
    at un (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:17:19766)
    at Mn (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:17:30260)
    at wr (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:18492)
    at Er (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:18880)
    at Br (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:25856)
    at Ur (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:25236)
    at Ir (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:24266)
    at Dr (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:18:23232)
    at Object.enqueueSetState (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:19:16204)
    at u.o.setState (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:19:28981)
    at u.f.onStateChange (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:5:26697)
    at Object.u [as dispatch] (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:7:30729)
    at Function.value (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:6:13370)
    at https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:32:9087
    at n.apply (https://mokum.place/assets/application-32e603646ebab19220a88d6e47c9299188c28cf8e91881fdcae26302b976ce65.js:22:3104)