Error sending 1 million testnet Grin

[transatoshi-mw]

Describe the bug
Cant send a million tGrin from wallet via slatepack.

To Reproduce
Steps to reproduce the behavior:

1. Entered 'grin-wallet send 1000000'.
2. Error back is 'Wallet command failed. LibWallet Error: Wallet store error: Serialization error: too large read'.
3. This is a tx of all coinbase outputs of tGrin.

OS: Debian 12
grin-wallet V5.3.3

[Anynomouss]

I think you should have a look at the transaction size due to that many input. My guess would be that the total size is larger than what a single block can handle. It is of course not possible to exceed the maximum block space. This is just a guess though, it should matter how large the total amount is, it is all about data limit.