use v2.0 api http send tx issue?

[bxlkm]

hi:
please help me!
vcash2.0_node:
run commond--

curl -0 -XPOST --user grin:XXXXX -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0", "method":"init_send_tx", "params":{"args":{"src_acct_name":null, "amount":1000000000, "minimum_confirmations":10, "max_outputs":100, "num_change_outputs":1, "selection_strategy_is_use_all":true, "message":"i am verygood", "target_slate_version":null, "estimate_only":null, "send_args":{"method":"http", "dest":"https://XXXXXX", "finalize":true, "post_tx":true, "fluff":false}}}, "id": 1}' http://127.0.0.1:3520/v2/owner

return:
{
"id": 1,
"jsonrpc": "2.0",
"result": {
"Err": {
"ClientCallback": "Posting transaction slate: Error: null, Message: null"
}
}
}

vcash_logs:
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 095e9c82690ba8b8d2222480e3ab556dc4893548673e8549bdae2a53b76721d16f with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 083fe967f42df281da5f3bc19dc1576398630ee2583323aed9cbc1fdafbcb9509c with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 0803711aafce8d939e4ecb4a66d4957e9bf6e8c2a3363ba03734833402e06249f7 with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 09d1fedbf887505552907502befac27371740a8743a0da0193fcdffdf203fbf55d with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 098ec5dc8081eb3f5539e4ca45474fd23e9e3d66af98e93c1779cd561de6701fda with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 08e0bea4e198b2a28617e62c6d911736a90214eaa5218727866e95af2d5b9e6956 with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 0924a280df12220d3505720e28e84362bf5eec1e9502e746648a413f3e81fbb110 with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitment 086df2f90162e761602226f45be688e2fff1a328f026701717ceed38dc93145a97 with error Not found.
20190712 10:13:28.766 ERROR grin_api::handlers::chain_api - Failure to get output for commitmen

[bxlkm]

./vcash-wallet send -d "https://XXXXX" 1.00
Password:
20190714 10:55:09.037 ERROR grin_wallet_impls::adapters::http - Posting transaction slate: Error: null, Message: null
Wallet command failed: LibWallet Error: Client Callback Error: Posting transaction slate: Error: null, Message: null