Script error when accessing a document created by ProseMirror example on dashboard

[hackerwins]

Description:

Script error when accessing a document created by ProseMirror example on dashboard

After creating the document of the ProseMirror example of the JS SDK, there seems to be a script error occurring when accessing the document on the Dashboard.

In the example, the selection is saved as a byte array type in the document to propagate it to the peers.

However, this seems to be causing a script error when performing JSON.parse on the Dashboard.

Why: