iOS报错呀

09:47:31.560 [Vue warn]: Error in v-on handler: "TypeError: undefined is not an object (evaluating 'document.querySelector')"
09:47:31.584 found in
09:47:31.603 ---> <EmojiComponent> at components/thegithubs-vue2-emoji-editor/EmojiComponent.vue:1
09:47:31.625 　　　　at pages/common/welcome1.vue:1 ERROR
09:47:31.649 TypeError: undefined is not an object (evaluating 'document.querySelector') ERROR
09:47:31.670 [Vue warn]: Error in v-on handler: "ReferenceError: Can't find variable: getSelection"
09:47:31.691 found in
09:47:31.713 ---> <EmojiComponent> at components/thegithubs-vue2-emoji-editor/EmojiComponent.vue:1
09:47:31.735 　　　　at pages/common/welcome1.vue:1 ERROR
09:47:31.755 ReferenceError: Can't find variable: getSelection ERROR
09:47:33.614 [Vue warn]: Error in v-on handler: "ReferenceError: Can't find variable: getSelection"
09:47:33.632 found in
09:47:33.654 ---> <EmojiComponent> at components/thegithubs-vue2-emoji-editor/EmojiComponent.vue:1
09:47:33.678 　　　　at pages/common/welcome1.vue:1 ERROR
09:47:33.697 ReferenceError: Can't find variable: getSelection ERROR
09:47:38.710 at pages/common/welcome1.vue:72
09:47:40.764 [Vue warn]: Error in v-on handler: "TypeError: undefined is not an object (evaluating 'document.querySelector')"
09:47:40.786 (found at pages/common/welcome1.vue:1) ERROR
09:47:40.807 TypeError: undefined is not an object (evaluating 'document.querySelector') ERROR
09:47:42.822 [Vue warn]: Error in v-on handler: "TypeError: undefined is not an object (evaluating 'document.querySelector')"
09:47:42.845 found in
09:47:42.865 ---> <EmojiComponent> at components/thegithubs-vue2-emoji-editor/EmojiComponent.vue:1
09:47:42.887 　　　　at pages/common/welcome1.vue:1 ERROR
09:47:42.909 TypeError: undefined is not an object (evaluating 'document.querySelector') ERROR
09:47:42.931 [Vue warn]: Error in v-on handler: "ReferenceError: Can't find variable: getSelection"
09:47:42.952 found in
09:47:42.974 ---> <EmojiComponent> at components/thegithubs-vue2-emoji-editor/EmojiComponent.vue:1
09:47:42.996 　　　　at pages/common/welcome1.vue:1 ERROR
09:47:43.018 ReferenceError: Can't find variable: getSelection ERROR