Issue: C.proofSize.toBn is not a function on block number

[sulaman0]

I encountered an error when using the Polkadot.js UI. When I click on a link, the following error appears:

Uncaught error. Something went wrong with the query and rendering of this component. Please supply all the details below when logging an issue, it may help in tracing the cause

C.proofSize.toBn is not a function

TypeError: C.proofSize.toBn is not a function at https://polkadot.js.org/apps/page.d47f234fff7c6edc.js:835:7858 at _i (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:77446) at Ol (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:89067) at _l (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:88275) at El (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:87880) at _u (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:137602) at ws (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:123430) at ys (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:123358) at vs (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:123221) at is (https://polkadot.js.org/apps/modu.bd8f3266470441f0.js:2:120028)

Steps to reproduce:

1. Open the Polkadot.js UI.
2. Click on the block number from explorer menu.
3. Observe the error.
4. This seems to be related to C.proofSize.toBn not being recognized as a function.

Here is a link for reference: https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frpc.3dpscan.io#/explorer/query/0x18225ad45be17612ec535080cdaf74776bb827a38f525f51e791dba4de959d47

Any guidance or fixes for this would be appreciated!