这个报错是onResize的原因吗？

报错信息：

on-error TypeError: Cannot read properties of null (reading 'offsetWidth')  
    at uni-h5.es.js:7052:25  
    at callWithErrorHandling (vue.runtime.esm.js:1375:22)  
    at callWithAsyncErrorHandling (vue.runtime.esm.js:1384:21)  
    at HTMLDivElement.invoker (vue.runtime.esm.js:9729:9) object {}

uni-h5.es.js:7052:25：

function useResizeSensorUpdate(rootRef, emit2, reset) {  
  const size = reactive({  
    width: -1,  
    height: -1  
  });  
  watch(() => extend({}, size), (value) => emit2("resize", value));  
  return () => {  
    const rootEl = rootRef.value;  
    size.width = rootEl.offsetWidth;  
    size.height = rootEl.offsetHeight;  
    reset();  
  };  
}