Angular 错误：未捕获（承诺中）：HttpErrorResponse:{headers"；：{normalizedNames"；：[]，“statusText"；：“Bad Request”}仅在Safari浏览器上

在Safari浏览器上调用PUT方法时，角度应用程序出现以下错误，但在Chrome浏览器上同样工作正常

 returnData = await this.http.put(applicationUrl, formattedData).toPromise(); 

[Error] Failed to load resource: the server responded with a status of 503 (Service Unavailable) 
       (pixel, line 0)
[Error] Failed to load resource: the server responded with a status of 503 (Service Unavailable) 
   (setuid, line 0)
 [Error] Failed to load resource: the server responded with a status of 400 (Bad Request) (11929, line 0)
 [Error] Error: Uncaught (in promise): HttpErrorResponse: 
 {"headers":{"normalizedNames":[],"lazyUpdate":null},"status":400,"statusText":"Bad Request","url":"http://localhost:4200/api/application/11929","ok":false,"name":"HttpErrorResponse","message":"Http failure