TypeError: undefined is not an object (evaluating 't[2][0].cursor')

[MrOrz]

Happens a few times a day, mostly on iOS.

View details in Rollbar: https://rollbar.com/mrorz/rumors-line-bot/items/289/

TypeError: undefined is not an object (evaluating 't[2][0].cursor')
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in $n
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in Sn
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in ft
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in Tn
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in jn
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in p
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in K
  File "https://rumors-line-bot.herokuapp.com/liff/bundle.994e30a1c2cc650ca34b.js", line 2, in Y
  File "[native code]", line unknown, in promiseReactionJob