Request failed with status code 500

[omanhom]

when run at Executor.ts (about 101 row,testnet):
await w.sendTransferAndWait({
sendMode: SendMode.PAY_GAS_SEPARATELY | SendMode.IGNORE_ERRORS,
secretKey: this.secretKey,
messages,
});

then

https://ton.access.orbs.network/4411c0ff5Bd3F8B62C092Ab4D238bEE463E64411/1/testnet/ton-api-v4/send
Error: Request failed with status code 500
at createError (/Volumes/slave3/ton/flappy-bird/node_modules/@ton/ton/node_modules/axios/lib/core/createError.js:16:15)
at settle (/Volumes/slave3/ton/flappy-bird/node_modules/@ton/ton/node_modules/axios/lib/core/settle.js:17:12)
at IncomingMessage.handleStreamEnd (/Volumes/slave3/ton/flappy-bird/node_modules/@ton/ton/node_modules/axios/lib/adapters/http.js:313:11)
at IncomingMessage.emit (node:events:531:35)
at endReadableNT (node:internal/streams/readable:1696:12)
at processTicksAndRejections (node:internal/process/task_queues:82:21)
[ERROR] 16:19:20 Error: Request failed with status code 500