`Invalid or missing configuration JSON` running `WalletKitDemo-Android`

[dabitdev]

When I run the WalletKitDemo-Android I see first a list of of coins but after a second It is displaying:
Getting invalid or missing configuration JSON

[DrewCarlson]

Have a look at the setup section of the README: https://github.com/blockset-corp/walletkit/blob/c100e65abceff5834307759d589a25b56ad6de6f/README.md#setup

[dabitdev]

ops, I missed this setup part. Thank you

On the other hand, it is the blockset dictionary optional if I do not need FastSync?

The "blockset" dictionary detemines how the FastSync capability is accomplisted with a connection to Blockset. Use of FastSync requires a "blockset client access token", which can be obtained from Blockset Docs, Client Authentication.

[DrewCarlson]

No that section is still required. Some data is acquired at launch from the API regardless of sync modes and any currency that is not BTC is effectively in 'fastsync'/api mode.