点快了就报着个错，我该怎么 修改？

thirdScriptError
Cannot set property ‘classname’ of undefined; [Component] Event Handler Error @ pages/games/game#bound gameda
TypeError: Cannot set property ‘classname’ of undefined
    at ye.gameda (http://127.0.0.1:63953/appservice/pages/games/game.js:270:36)
    at Object.r.safeCallback (WAService.js:1:857898)
    at WAService.js:1:1048426
    at r (WAService.js:1:982076)
    at WAService.js:1:982184
    at WAService.js:1:253666
    at n (http://127.0.0.1:63953/appservice/appservice?t=1562135087132:1159:27752)
    at e.exports.<anonymous> (http://127.0.0.1:63953/appservice/appservice?t=1562135087132:1159:28094)
    at http://127.0.0.1:63953/appservice/appservice?t=1562135087132:1159:13287
    at Array.forEach (<anonymous>)
console.error @ VM692:1
errorReport @ WAService.js:1
thirdErrorReport @ WAService.js:1
(anonymous) @ WAService.js:1
(anonymous) @ WAService.js:1
r.safeCallback @ WAService.js:1
r.call @ WAService.js:1
message @ WAService.js:1
r.safeCallback @ WAService.js:1
(anonymous) @ WAService.js:1
r @ WAService.js:1
(anonymous) @ WAService.js:1
(anonymous) @ WAService.js:1
n @ appservice?t=1562135087132:1159
(anonymous) @ appservice?t=1562135087132:1159
(anonymous) @ appservice?t=1562135087132:1159
_ws.onmessage @ appservice?t=1562135087132:1159