集成paypal测试的时候遇到这个问题，"name":"VALIDATION_ERROR""

2021-07-23 16:49:50.300 ERROR 14632 --- [nio-8085-exec-7] com.paypal.base.HttpConnection : Response code: 400 Error response: {"name":"VALIDATION_ERROR","details":[{"field":"transactions[0].item_list.shipping_address.line1","issue":"Required field missing"}],"message":"Invalid request - see details","information_link":"https://developer.paypal.com/docs/api/payments/#errors","debug_id":"84cf7cee6b6cd"}
2021-07-23 16:49:50.311 ERROR 14632 --- [nio-8085-exec-7] c.m.m.p.controller.PaymentController : Response code: 400 Error response: {"name":"VALIDATION_ERROR","details":[{"field":"transactions[0].item_list.shipping_address.line1","issue":"Required field missing"}],"message":"Invalid request - see details","information_link":"https://developer.paypal.com/docs/api/payments/#errors","debug_id":"84cf7cee6b6cd"}
name: VALIDATION_ERROR message: Invalid request - see details details: [{

HTTP400错误，是请求错误。
返回的json数据错误：
{"name":"VALIDATION_ERROR",