fix: 详情页二维码为空报错修正

src/components/common/CommonQrcode.vue

@@ -20,17 +20,19 @@ const props = withDefaults(
 const canvasRef = ref<HTMLCanvasElement>();
 
 onMounted(() => {
-  QRCode.toCanvas(
-    canvasRef.value,
-    props.content,
-    {
-      width: 68,
-      margin: 0,
-    },
-    (error) => {
-      if (error) console.error(error);
-      console.log('success!');
-    },
-  );
+  if (props.content) {
+    QRCode.toCanvas(
+      canvasRef.value,
+      props.content,
+      {
+        width: 68,
+        margin: 0,
+      },
+      (error) => {
+        if (error) console.error(error);
+        console.log('success!');
+      },
+    );
+  }
 });
 </script>