fix:bug修改

src/views/authentic/Pdf.vue

@@ -47,7 +47,7 @@
             <div class="a4_sub_title">地块四至图</div>
             <div class="img_box" >
               <img class="img-content" style="z-index: 9999" width="595" height="500" v-if="imgUrl"  :src="imgUrl" />
-              <div class="img-content" v-if="!imgUrl" ref="mapRef" id="mapRefId"></div>
+              <div class="img-content" v-else ref="mapRef" id="mapRefId"></div>
             </div>
             <div class="signature">签名:______________</div>
           </div>