There are two types of errors related to purchases

[Gtokentool]

When I make a single purchase of more than 1.5sol:
SendTransactionError: Simulation failed.
Message: Transaction simulation failed: Error processing Instruction 1: Program failed to complete.
Logs:
[
"Program log: Instruction: InitializeAccount3",
"Program TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA consumed 4188 of 984164 compute units",
"Program TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA success",
"Program ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL consumed 20307 of 1000000 compute units",
"Program ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL success",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P invoke [1]",
"Program log: Instruction: Buy",
"Program log: panicked at programs/pump/src/lib.rs:152:9:\nattempt to subtract with overflow",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P consumed 18010 of 979693 compute units",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P failed: SBF program panicked"
].
Catch the SendTransactionError and call getLogs() on it for full details.
at Connection.sendEncodedTransaction (chunk-XCAX5GFN.js?v=e792720a:14040:17)
at async Connection.sendRawTransaction (chunk-XCAX5GFN.js?v=e792720a:14007:24)
at async Connection.sendTransaction (chunk-XCAX5GFN.js?v=e792720a:13971:18)
at async sendTx2 (util.ts:515:24)
at async PumpFunSDK.oneCreateAndBuy (pumpfun.ts:306:18)
at async cj (index.tsx:290:28)
at async onClick (index.tsx:567:36)

When I add multiple purchases to a block, the total amount exceeds 1.5sol:
SendTransactionError: Simulation failed.
Message: Transaction simulation failed: Error processing Instruction 3: custom program error: 0x1772.
Logs:
[
"Program log: Instruction: InitializeAccount3",
"Program TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA consumed 4188 of 177903 compute units",
"Program TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA success",
"Program ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL consumed 21807 of 195239 compute units",
"Program ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL success",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P invoke [1]",
"Program log: Instruction: Buy",
"Program log: AnchorError thrown in programs/pump/src/lib.rs:136. Error Code: TooMuchSolRequired. Error Number: 6002. Error Message: slippage: Too much SOL required to buy the given amount of tokens..",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P consumed 18634 of 173432 compute units",
"Program 6EF8rrecthR5Dkzon8Nwu78hRvfCKubJ14M5uBEwF6P failed: custom program error: 0x1772"
].
Catch the SendTransactionError and call getLogs() on it for full details.
at Connection.sendEncodedTransaction (chunk-XCAX5GFN.js?v=e792720a:14040:17)
at async Connection.sendRawTransaction (chunk-XCAX5GFN.js?v=e792720a:14007:24)
at async Connection.sendTransaction (chunk-XCAX5GFN.js?v=e792720a:13971:18)
at async sendTx2 (util.ts:515:24)
at async PumpFunSDK.oneCreateAndBuy (pumpfun.ts:306:18)
at async cj (index.tsx:290:28)
at async onClick (index.tsx:567:36)

I'm using devnet and I'd like to ask if this happens on mainnet
Looking forward to hearing from you

[YaminZheng]

滑点设置太小

[Gtokentool]

滑点设置太小

How much slippage do I need to set, the current slippage basis is 500
It's equivalent to 5% slippage, isn't it?

[YaminZheng]

Why do you speak English when you are Chinese?
你可以设置无限大，如果你不会因为币价的波动而执意要买入的话。

[Gtokentool]

Why do you speak English when you are Chinese? 你可以设置无限大，如果你不会因为币价的波动而执意要买入的话。

I've increased the slippage and no longer prompts "Error Code: TooMuchSolRequired. Error Number: 6002. Error Message: slippage: Too much SOL required to buy the given amount of tokens", but it will also prompt "failed: SBF program panicked"

[Gtokentool]

你为什么是中国人却说英语？ 你可以设置无限大，如果你不会因为币价的波动而执着要买入的话。

I'm a sophomore and I took on a development assignment online, but I had a little trouble, this is someone else's home field, so I speak English more easily for everyone to understand