Error Code: AccountDiscriminatorMismatch

[cxp-13]

I want to create a PDA account and the process is successful, but get an error when to deserialize account data.
I have checked the Remaining account and the Deserializes account, and both of them pubkey is equal.

Account defines:

#[account]
#[derive(Debug, Copy)]
pub struct WarriorCardsUsage {
    pub battle_count: u64,
    pub attacker: Pubkey,
    pub collection_mint: Pubkey,
}

Code:

let warrior_card_usage_data_len = mem::size_of::<WarriorCardsUsage>() + 8;
// load warrior cards usages
    for warrior_card_usage_ai in &ctx.remaining_accounts[0..warrior_cards_usage_len] {
        if warrior_card_usage_ai.data_is_empty() {
            msg!("creating warrior card usage account");
            let rent_lamports = rent.minimum_balance(warrior_card_usage_data_len);
            let cpi_accounts = CreateAccount {
                from: ctx.accounts.payer.to_account_info(),
                to: (*warrior_card_usage_ai).clone(),
            };
            let cpi_context = CpiContext::new(
                ctx.accounts.system_program.to_account_info(),
                cpi_accounts
            );
            // 定义 PDA 的种子数组
            let collect_mint = attacker_cards[0].collection_mint;
            msg!("collect_mint: {}", collect_mint);
            // 使用 find_program_address 计算 PDA 和 bump
            let seeds = &[b"warrior_cards_usage", attacker.as_ref(), collect_mint.as_ref()];

            let (pda, bump) = Pubkey::find_program_address(seeds, ctx.program_id);

            msg!("pda: {}, bump: {}", pda, bump);

            let signer_seeds: &[&[u8]] = &[
                b"warrior_cards_usage",
                attacker.as_ref(),
                collect_mint.as_ref(),
                &[bump],
            ];

            // cpi_context.with_signer(&[signer_seeds]);
            msg!("Expected data length: {}", warrior_card_usage_data_len);
            msg!("Minimum rent: {}", rent_lamports);

            create_account(
                cpi_context.with_signer(&[signer_seeds]),
                rent_lamports,
                u64::try_from(warrior_card_usage_data_len).unwrap(),
                ctx.program_id
            )?;
        }
        let mut warrior_cards_usage: Account<WarriorCardsUsage> =
            Account::try_from(warrior_card_usage_ai)?; // problem is here

        msg!("Warrior cards usage: {:?}", warrior_cards_usage.to_account_info().key());
        msg!("Remaining account key: {}", warrior_card_usage_ai.key());

        warrior_cards_usage.attacker = attacker;
        warrior_cards_usage.battle_count = 99;
        warrior_cards_usage.collection_mint = attacker_cards[0].collection_mint;

        msg!("Warrior cards usage: {:?}", warrior_cards_usage);

        warrior_cards_usages.push(warrior_cards_usage);
    }

when program execute at let mut warrior_cards_usage: Account<WarriorCardsUsage> = Account::try_from(warrior_card_usage_ai)?; // problem is here
log:

[
  "Program log: creating warrior card usage account",
  "Program log: collect_mint: 5Pc8iecph7jbWSU4bpCV9cVC1MV2GHgxFPFWLFwB1D2Q",
  "Program log: pda: EwKSn5WRnCcZmizwiALEMdM4KxMtdxBUbkpCvKJjLLUk, bump: 255",
  "Program log: Expected data length: 80",
  "Program log: Minimum rent: 1447680",
  "Program 11111111111111111111111111111111 invoke [2]",
  "Program 11111111111111111111111111111111 success",
  "Program log: AnchorError caused by account: WarriorCardsUsage. Error Code: AccountDiscriminatorMismatch. Error Number: 3002. Error Message: 8 byte discriminator did not match what was expected.",
  "Program GANARSUoveUHE3dWL7Bmq8Hh8HdW1PPxRTfYLupg9Zna consumed 164903 of 999850 compute units",
  "Program GANARSUoveUHE3dWL7Bmq8Hh8HdW1PPxRTfYLupg9Zna failed: custom program error: 0xbba"
]. 

[acheroncrypto]

The error is helpful in this case because you're trying to convert an AccountInfo to a typed account, but the discriminator of the account hasn't yet been set. You can fix this by either writing the discriminator to the account data after the create_account call, or by using Account::try_from_unchecked instead of Account::try_from.

Also, please use the Solana StackExchange or the Anchor Discord instead of GitHub for issues like this.