can not interact with the deployed contract successfully on windows 10

[mydanniel]

I have deployed a contract successfully on arweave using exm-sdk, the contract id is 6DWtTjkRZMhgYrQN6KzRC50WbKqTBo5mIAMJSn2pXf8

when i use the command exm function:write 6DWtTjkRZMhgYrQN6KzRC50WbKqTBo5mIAMJSn2pXf8 --input '{"username": "Clark Kent"}' --token mytoken or exm function:write 6DWtTjkRZMhgYrQN6KzRC50WbKqTBo5mIAMJSn2pXf8 --input '{\ "username\ ": \ "Clark Kent\ "}' --token mytoken to interact with the contract,it has an error saying "400: Internal server error while sending write operation to function 6DWtTjkRZMhgYrQN6KzRC50WbKqTBo5mIAMJSn2pXf8. "Error: Error: Contract could not be processed""