feat: show placeholder QR code with loading instead of "Loading" text in QR code login page (#4031)

idp/wechat.go

@@ -17,7 +17,6 @@ package idp
 import (
 	"bytes"
 	"crypto/sha1"
-	"encoding/base64"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
@@ -29,7 +28,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/skip2/go-qrcode"
 	"golang.org/x/oauth2"
 )
 
@@ -324,10 +322,7 @@ func GetWechatOfficialAccountQRCode(clientId string, clientSecret string, provid
 		return "", "", err
 	}
 
-	var png []byte
-	png, err = qrcode.Encode(data.URL, qrcode.Medium, 256)
-	base64Image := base64.StdEncoding.EncodeToString(png)
-	return base64Image, data.Ticket, nil
+	return data.URL, data.Ticket, nil
 }
 
 func VerifyWechatSignature(token string, nonce string, timestamp string, signature string) bool {