Unresolved import 'crate', could not find '__client_accounts_*' in the crate root

Question

I am following an online tutorial on working with PDAs using the anchor framework for Rust and I cannot get the following Solana program to work.

use anchor_lang::prelude::*;

declare_id!("*");

#[program]
pub mod crunchy_vs_smooth {
    use super::*;
    
    pub fn initialize(ctx: Context<Initialize>, vote_account_bump: u8) -> Result<()> {
        ctx.accounts.vote_account.bump = vote_account_bump;
        Ok(())
    }

    pub fn vote_crunchy(ctx: Context<Vote>) -> Result<()> {
        ctx.accounts.vote_account.crunchy += 1;
        Ok(())
    }

    pub fn vote_smooth(ctx: Context<Vote>) -> Result<()> {
        ctx.accounts.vote_account.smooth += 1;
        Ok(())
    }
}

#[derive(Accounts)]
#[instruction(vote_account_bump: u8)]
struct Initialize<'info> {
    
    #[account(init, seeds = [b"vote_account".as_ref()], bump, payer = user, space = 16+16)]
    vote_account: Account<'info, VotingState>,
    user: Signer<'info>,
    system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct Vote<'info> {
    #[account(mut, seeds = [b"vote_account".as_ref()], bump)]
    vote_account: Account<'info, VotingState>,
}

#[account]
#[derive(Default)]
pub struct VotingState {
    crunchy: u64,
    smooth: u64,
    bump: u8,
}

I keep getting the following errors:

1. relating to #[program]

unresolved import crate | 8 | #[program] could not find __client_accounts_initialize in the crate root |

#[program] the trait anchor_lang::Accounts<'_> is not implemented for Initialize<'_>

2. relating to the Initialize struct with the account "pub vote_account"

the payer specified for an init constraint must be mutable. 37 | pub struct Initialize<'info> { function or associated item try_accounts not found for this |

I have used different constraints for the Initialize struct and have not made anything better.

I am not able to run anchor build because of the errors. What am I doing wrong?