feat: 获取手签图片加日志

hnqz-upms/hnqz-upms-biz/src/main/java/com/qunzhixinxi/hnqz/admin/controller/WmTaxHelperController.java

@@ -283,7 +283,7 @@ public class WmTaxHelperController {
 				model.setSignatureHandwriting(Base64Utils.encodeImageWithPrefix(new URI(signPic)));
 
 			} catch (Exception e) {
-				log.error("获取手签图片失败");
+				log.error("获取手签图片失败，signPic={}", signPic);
 				return R.failed("获取手签图片失败");
 			}