# Error in ionic build ios after upgrading to Beta 10 **URL:** \ **Category:** ionic-v3\ **Created:** [July 13, 2016, 8:48am UTC](https://forum.ionicframework.com/t/error-in-ionic-build-ios-after-upgrading-to-beta-10/57346 "2016-07-13T08:48:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![maggie001](https://avatars.discourse-cdn.com/v4/letter/m/278dde/32.png) [@maggie001](https://forum.ionicframework.com/u/maggie001)\ **Post date:** [July 13, 2016, 8:48am UTC](https://forum.ionicframework.com/t/error-in-ionic-build-ios-after-upgrading-to-beta-10/57346/1 "2016-07-13T08:48:18Z")
I upgraded to Beta 10 and fixed everything as per instructions. The app is running without any problems on `ionic serve`. But `ionic build ios` is throwing an error. ``` /Users/Documents/myApp/platforms/ios/AppName/Plugins/cordova-plugin-ionic-keyboard/IonicKeyboard.m:75:22: error: property 'hackishlyHidesInputAccessoryView' not found on object of type 'UIView *' self.webView.hackishlyHidesInputAccessoryView = YES; ^ /Users/Documents/myApp/platforms/ios/AppName/Plugins/cordova-plugin-ionic-keyboard/IonicKeyboard.m:78:22: error: property 'hackishlyHidesInputAccessoryView' not found on object of type 'UIView *' self.webView.hackishlyHidesInputAccessoryView = NO; ^ 2 errors generated. ``` Followed by this error - ``` Caught exception: TypeError: Invalid data, chunk must be a string or buffer, not function at WriteStream.Socket.write (net.js:647:11) at WriteStream.stream.write (/usr/local/lib/node_modules/ionic/node_modules/ionic-app-lib/node_modules/cordova-lib/node_modules/npm/node_modules/ansi/lib/newlines.js:36:21) at Socket. (/usr/local/lib/node_modules/ionic/lib/ionic/cordova.js:284:22) at emitOne (events.js:101:20) at Socket.emit (events.js:188:7) at readableAddChunk (_stream_readable.js:172:18) at Socket.Readable.push (_stream_readable.js:130:10) at Pipe.onread (net.js:542:20) ``` Any idea what causes this? ---
**Author:** ![itlr](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/itlr/32/97646_2.png) [@itlr](https://forum.ionicframework.com/u/itlr)\ **Post date:** [July 13, 2016, 3:57pm UTC](https://forum.ionicframework.com/t/error-in-ionic-build-ios-after-upgrading-to-beta-10/57346/2 "2016-07-13T15:57:15Z")
I would `ionic platform remove ios`, `ionic platform add ios`, `ionic plugin remove cordova-plugin-keyboard`, `ionic plugin add cordova-plugin-keyboard` I doubt ionic upgrade would have to break the cordova plugin. ---
**Author:** ![maggie001](https://avatars.discourse-cdn.com/v4/letter/m/278dde/32.png) [@maggie001](https://forum.ionicframework.com/u/maggie001)\ **Post date:** [July 14, 2016, 6:22am UTC](https://forum.ionicframework.com/t/error-in-ionic-build-ios-after-upgrading-to-beta-10/57346/3 "2016-07-14T06:22:30Z")
Removing the cordova plugin worked. Thanks.