How do I load my registered wallet?

In the documentation for loadwallet The syntax described by RPC is:

loadwallet "filename" ( load_on_startup )

And additionally specify:

Arguments:
1. filename (string, required) The wallet directory or .dat file.

What the documentation doesn’t make clear is that you need to provide a file name. Relative to wallet directory ~/.bitcoin/regtest/wallets. In that respect, it would be nice if the documentation were improved.

listwallets It returns the currently loaded wallet, which is why it didn’t show up before it was loaded.