Unable to decode storage

[AurevoirXavier]

RPC-CORE: queryStorageAt(keys: Vec<StorageKey>, at?: BlockHash): Vec<StorageChangeSet>:: Unable to decode storage accountMigration.deposits: entry 0:: createType(Vec<DarwiniaDepositDeposit>):: Vec<DarwiniaDepositDeposit>:: Decoded input doesn't match input, received 0x0400000000a027128c1c2b020000000000000030aca6bb83010000000000000000000001 (36 bytes), created 0x0400000000a027128c1c2b020000000000000030aca6bb8301000000000000000000000100000000000000000000000000000000 (52 bytes)

Reproduce steps:

1. open https://polkadot.js.org/apps/?rpc=ws%3A%2F%2Fg1.dev.darwinia.network%3A20000#/chainstate
2. query accountMigration::deposits

[jacogr]

Weird, the type is simple -

{"id":"u16","value":"u128","startTime":"u128","expiredTime":"u128","inUse":"bool"}

(we get this from console.log(api.createType('DarwiniaDepositDeposit').toRawType()) in the JS console on the apps UI)

Since it is simple enough, the length of a single entry should be

2 (u16) + 16 (u128) + 16 (u128) + 16 (u128) + 1 (bool) = 51 bytes

(The missing byte is the length prefix, ie 4 >> 2 = 1 - there is 1 entry)

In this case, the state seems incorrect. One entry of this type should be 51 bytes, with the length received we only go 36 bytes. So it cannot decode that into the above format.

It is possibly a missed migration.

[AurevoirXavier]

Thanks! We did miss a migration.

[polkadot-js-bot]

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