fix

src/components/SelectBusiness.vue

@@ -62,7 +62,7 @@ function handleChange(value,context){
     :disabled="props.disabled"
     @search="remoteMethod"
     @change="handleChange"
-    @focus="remoteMethod"
+    @focus="remoteMethod('')"
   >
     <t-option 
       v-for="item in options"