Getting this error upon cognito backup restore

[yspireon]

/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/protocol/json.js:52
resp.error = util.error(new Error(), error);
^

InvalidParameterException: User pool does not have SMS configuration to send messages.
at Request.extractError (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/protocol/json.js:52:27)
at Request.callListeners (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
at Request.emit (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
at Request.emit (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/request.js:686:14)
at Request.transition (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/state_machine.js:14:12)
at /usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/state_machine.js:26:10
at Request. (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/request.js:38:9)
at Request. (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/request.js:688:12)
at Request.callListeners (/usr/local/lib/node_modules/cognito-backup-restore/node_modules/aws-sdk/lib/sequential_executor.js:116:18) {
code: 'InvalidParameterException',
time: 2022-08-12T17:17:28.468Z,
requestId: 'b0d0cee0-e499-46a6-9afd-542f0f10bc04',
statusCode: 400,
retryable: false,
retryDelay: 40.703989640319094
}

[yspireon]

it imports only 1 user by a time