dcrwallet My Coins Are Stuck Unspendable

I tried POS mining long back ago bought ticket when decred was just opened mainnet the block height was around 5000. I read about 256 block thing and i thought my coins are gonna be free after 256 blocks. after some years I've checked my wallet and it's still unspendable. how can i solve this?

That's what I see when I write getbalance

Code:

{
  "balances": [
    {
      "accountname": "default",
      "immaturecoinbaserewards": 0,
      "immaturestakegeneration": 0,
      "lockedbytickets": -260.20918527,
      "spendable": 0.00114362,
      "total": 22.96890197,
      "unconfirmed": 0,
      "votingauthority": -260.20918527
    }
  ],
  "blockhash": "000000000000003f8d82456d0472726029befec2f1cd72e47fb32d7ed48dd77f"
}