test-4.0.0 cli_wallet doesn't work

[abitmore]

Bug Description

Execution error
{"error":"Execution error","data":{"id":5,"error":{"code":10,"message":"Execution error","data":{"code":10,"name":"assert_exception","message":"Assert Exception","stack":[{"context":{"level":"error","file":"api.cpp","line":307,"method":"custom","hostname":"","thread_name":"th_a","timestamp":"2019-10-25T08:48:16"},"format":"_custom_operations_api: ","data":{}}]}}}}
th_a state.cpp:39 handle_reply

@bangzi1001 please amend more info about this.

Impacts
Describe which portion(s) of BitShares Core may be impacted by this bug. Please tick at least one box.

• API (the application programming interface)
• Build (the build process or something prior to compiled code)
• CLI (the command line wallet)
• Deployment (the deployment process after building such as Docker, Travis, etc.)
• DEX (the Decentralized EXchange, market engine, etc.)
• P2P (the peer-to-peer network for transaction/block propagation)
• Performance (system or user efficiency, etc.)
• Protocol (the blockchain logic, consensus, validation, etc.)
• Security (the security of system or user data, etc.)
• UX (the User Experience)
• Other (please add below)

CORE TEAM TASK LIST

• Evaluate / Prioritize Bug Report
• Refine User Stories / Requirements
• Define Test Cases
• Design / Develop Solution
• Perform QA/Testing
• Update Documentation

[bangzi1001]

The error above happen when try to connect to witness node rpc via cli_wallet:
programs/cli_wallet/cli_wallet -s ws://127.0.0.10:8100

[bangzi1001]

Here is second case reported by witness.yao partner:

[pmconrad]

Fixed by #2033