Wallet file verification failed error #25807

Hello, "bitcoin-cli createwallet adminwallet" ran on ubuntu server and admin_wallet folder was created in "~/.bitcoin/" directory. Then when I type "bitcoin-cli loadwallet adminwallet" I get this error:

error code: -4 error message: Wallet file verification failed. SQLiteDatabase: Unable to obtain an exclusive lock on the database, is it being used by another instance of Bitcoin Core?

`ps-aux | grep bitcoin

root 56945 116 16.0 4178224 1308340 ? Ssl Aug08 1205:58 bitcoind --daemon

root 61210 0.0 0.0 8168 724 pts/1 S+ 07:39 0:00 grep --color=auto bitcoin`

When you create a wallet it's automatically loaded so loadwallet isn't required in this case.

You can check list of loaded wallets with listwallets