I can help you with it. However, I need more information on your project and the specific error message you are experiencing. Here is a pattern based on what you have provided:
Solana Playground: Placing a marker with unusable account
In this article, we will investigate the problem of placing the marker in the Solana blockchain using Anchor, which is a popular decentralized application (DAPP) design system.
lib.rs
`Rust
Use Anchor_Lang :: Prelude ::*;
Use Anchor_Spl :: {
Associate_token :: AssociatedToken,
Metadata :: {CREATE_METAdata_Als_v3},
};
#[Anchor’s Agreement]
mod my_contract {
Use Super ::*;
#[program]
Pub Fn Create_Token (_info: Programmfo) -> Result <(), InstingerRor> {
// Create an AssociatedToken Marker
Let the marker = AssociationToken :: New („My Token“, „Mtoken“, 1_000_000_000);
// Create a marker metadata accounts
Let the accounts = Create_metadata_accounts_v3 (& Token, & [123]);
OK (())
}
}
`
Error
`JSON
{
„Type“: „Error“,
„MSG“: „InstingerRor: Account is not executable“,
„Data“: {
„Insting_id“: „Create_token“,
„Accounts“: {
„Marker“: {
„Data“: zero,
„Key“: „0x …“
},
„Metadata_accounts_v3“: [
… …
]
}
}
}
`
Solution
In this example, the Create_metadata_accounts_v3 is called with an empty account array. To prevent this problem, we need to specify an account that will be executed by the anchor compiler. This account must have a unique key (like „0x …“) and the appropriate contract address.
To prevent the problem in the „My_Contract.RS", we need to add this row to the 'Create_Token':
Rust
Allow Execution_info = Programmingfo :: New ();
Let the contract_address = execution_info.account_key (). As_str (). Unwap_or („0x …“);
Let the account = „0x …“; // Replace with a valid account key
// Create a marker metadata accounts
Allow accounts = Create_metadata_accounts_v3 (& Token, & [Account]);
OK (())
`
Full code
Here is a full code with adjusted “My_Contract.rsfile:
Rust
Use Anchor_Lang :: Prelude ::*;
Use Anchor_Spl :: {
Associate_token :: AssociatedToken,
Metadata :: {CREATE_METAdata_Als_v3},
};
#[Anchor’s Agreement]
mod my_contract {
Use Super ::*;
#[program]
Pub Fn Create_Token (_info: Programmfo) -> Result <(), InstingerRor> {
// Create an AssociatedToken Marker
Let the marker = AssociationToken :: New („My Token“, „Mtoken“, 1_000_000_000);
// Create a marker metadata accounts
Allow Execution_info = Programmingfo :: New ();
Let the account = „0x …“; // Replace with a valid account key
Let the contract_address = execution_info.account_key (). As_str (). Unwap_or („0x …“);
Allow accounts = Create_metadata_accounts_v3 (& Token, & [Account]);
OK (())
}
}
`
Notes
- Make sure the variable variable variable variable in the variable
Create_Tokenwith a valid account key.
- In this example, it is assumed that you have already created your Solana development environment and have set up the necessary addictions (eg anchor, anchor SPL).
- This is just an example of a code fragment and you should consult the official anchor and anchor SPL documentation to get more information on how to place the tokens in Solana’s blockchain.
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