DynamoDB连接问题 - 用于NodeJs的aws-sdk

【以下的问题经过翻译处理】 在通过NodeJs aws-sdk连接DynamoDB时，我遇到了以下问题：

InvalidSignatureException：凭据应在有效区域范围内，而不是在“eu-east-2”。 在请求提取错误 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/protocol/json.js:52:27) 在请求调用侦听器 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/sequential_executor.js:106:20) 请求发出 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/sequential_executor.js:78:10) 在请求中发出 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/request.js:686:14) 在请求状态转换 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/request.js:22:10) 在AcceptorStateMachine.runTo (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/state_machine.js:14:12) 在/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/state_machine.js:26:10 在请求中发出 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/request.js:38:9) 在请求中发出 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/request.js:688:12) 在请求调用侦听器 (/Users/saravanan_vij/Documents/Personal/GitHub/Backtester/node_modules/aws-sdk/lib/sequential_executor.js:116:18) { code: 'InvalidSignatureException', time: 2021-12-30T17:22:35.364Z, requestId: '3CT4LSCT0395369U3SVVNMV4B3VV4KQNSO5AEMVJF66Q9ASUAAJG', statusCode: 400, retryable: false, retryDelay: