Unable to transfer Spl Token in Solidity via CPI in anchor

import "solana";import "./spl_token_minter.sol";function transferTokensFromUserToContract(address user, uint256 amount, address signerAccount) internal {        uint64 amount64 = uint64(amount);        AccountMeta[3] metas = [            AccountMeta({pubkey: user, is_writable: false, is_signer: false}), // User's token account            AccountMeta({pubkey: contractTokenAccount, is_writable: false, is_signer: false}), // Contract's token account            AccountMeta({pubkey: signerAccount, is_writable: true, is_signer: true}) // SplTokenMinter program        ];        spl_token_minter.transferTokens{accounts: metas}( amount64 );    }

Trying to transfer token in my Solidity Smart contract via CPI call(creating and importing the interface generated of the spl file https://solang.readthedocs.io/en/v0.3.3/targets/solana.html#calling-anchor-programs-from-solidity as stated in official docs )in anchor, all but the token balances are unchanged.Token Transfer function implemented in spltokenMinter file:

    @mutableAccount(from) // token account to transfer from    @mutableAccount(to) // token account to transfer to    @mutableSigner(owner)    function transferTokens(        uint64 amount // amount to transfer    ) external {        print("inside the transfer token function");        SplToken.transfer(            tx.accounts.from.key,             tx.accounts.to.key,             tx.accounts.owner.key,             amount        );    }