GroovyRuntimeException：无法读取只写属性

Question

使用此代码段

RewriteRule ^/api/(.*)$ /apicall/callQAapi.php?request=$1 [L,QSA,NC]

我收到了一个相当隐秘的错误消息：

import software.amazon.awssdk.auth.credentials.AwsBasicCredentials
import software.amazon.awssdk.regions.Region
import software.amazon.awssdk.services.dynamodb.DynamoDbClient

DynamoDbClient dynamoDB = DynamoDbClient.builder()
    .region(Region.US_EAST_1)
    .credentialsProvider(AwsBasicCredentials.create(KEY, SECRET_KEY))
    .build()

关于我应该寻找什么的任何提示？