clique not working

[yoomee1313]

Describe the bug
For example, if the genesis.json has clique field, the node returns crit error when started.

{
    "config": {
        "clique": {
            "period": 1,
            "epoch": 1
        },
       ...
]

How to reproduce

• prepare genesis.json with clique field
• init the node with the genesis.json
• start the node

Expected behavior
The node panics.

Attachments

INFO[03/21,15:01:35 +09] [30] No governance state found in a database  
CRIT[03/21,15:01:35 +09] [30] Failed to read governance. ChainConfig.Istanbul == nil 

Environment (please complete the following information)

• v1.8.0-rc.4

Additional context
Add any other context about the problem here.

[exalate-issue-sync]

Exalate commented: Issue Created by: yoomee1313