While submit block, I got the result: tx-overwinter-active

While submit block, I got the result: tx-overwinter-active.
{“result”:“tx-overwinter-active”,“error”:null,“id”:“1”}
What does it mean.

Were you submitting the block on testnet?
What exact commands were you using to generate this error?
Can you reproduce the error?
Can you provide the raw hex for the block, so it can be examined?
You can reply here, but its best to create a new Github issue: Issues · zcash/zcash · GitHub
Thanks!