Test-Explorer doesn't show block's transactions

Two local testnet nodes on Ubuntu 18.04.
Explorer doesn't show the block contents (there's coinbase transaction):

![image.png](https://images.zenhubusercontent.com/5b3149834ac4df24de08eb88/930db14e-60ca-48bd-931e-4a662d43a444)

![image.png](https://images.zenhubusercontent.com/5b3149834ac4df24de08eb88/e52c751f-569f-4366-acaf-e5df28e0f55b)



