Trusted Checkpoint failing to Initialize.

**Describe the bug**

Trusted Checkpoint Failing to Initialize.

**Expected behavior**

Within the *Trusted Checkpoint* input, I'm supposed to input the Block Root hash and its supposed to produce the below image...

Instead it shows:

**Steps to Reproduce**

According to the video: https://www.youtube.com/watch?v=3O7nNHhdqlc&t=68s
1. Open https://beaconcha.in/
2. Click on *Epoc*
3. Click on *Slot*
4. Copy Block Root *hash*
5. Open https://light-client-demo.lodestar.casa/
6. Paste Block Root *hash* into Trusted Checkpoint *[input]*
7. Click *Initialize From Trusted Checkpoint*
7. Error: *Error initializing from trusted checkpoint ---hashnumber--- : Epoch is not a number: NaN*

**Desktop:**

- OS: Windows 10
- Version: *Online Issue, (Version not Applicable)*
- Branch: *Online Issue, (Version not Applicable)*
- Commit hash: *Online Issue, (Version not Applicable)*

Reproduce the failure in the light-client-demo.lodestar.casa Trusted Checkpoint input using the beaconcha.in block root workflow and the linked video. Trace the initialization entry point from the input through the reported “Epoch is not a number: NaN” error. Done means a valid block root initializes successfully and displays the expected checkpoint result.

Written by the indexing model from the issue text.