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Transferring SPL Token Error "Changed the Balance of a Read-Only Account" (Using Anchor)
tokens from vault to user
let transfer_instruction = Transfer {
from: ctx.accounts.token_vault.to_account_info(),
to: ctx.accounts.user_token_account.to_account_info(), … ;
// Transfer SOL from user to vault's native SOL account
**ctx.accounts.user.try_borrow_mut_lamports()? -= sol_amount;
**ctx.accounts.vault_pda.try_borrow_mut_lamports()? …