Bug in LNS example app

[Tschakki]

• Start the app ./bin/run start --api-ws and go to localhost:8000
• Log in with one a passphrase of a genesis delegate
• Go to profile page of the account
• See error in console:

Error: Invalid schema property found. Path: address,0
    at Object.t.recursiveTypeCast (json_wrapper.ts:147:11)
    at Object.t.recursiveTypeCast (json_wrapper.ts:113:4)
    at r.value (codec.ts:132:3)
    at t.value (account.ts:46:16)
    at t.a (MyAccount.tsx:93:45)
    at ia (react-dom.production.min.js:157:137)
    at $a (react-dom.production.min.js:180:154)
    at Hs (react-dom.production.min.js:269:343)
    at Ou (react-dom.production.min.js:250:347)
    at Eu (react-dom.production.min.js:250:278)

• Create a new issue if the error is validated!

This is probably related to LiskArchive/lisk-sdk#7002