SyntaxError: /tmp/hyperglass_XXX.json: Unexpected end of JSON input

Bug Description

Whenever I try to build the ui with hyperglass build-ui it errors out giving the error SyntaxError: /tmp/hyperglass_XXX.json: Unexpected end of JSON input

Expected behavior

I expect it to build the UI without any issue.

Steps to Reproduce

• Install hyperglass using pip3
• Create devices.yaml file
• Run hyperglass build-ui

Local Configurations

devices.yaml

routers:
  - name: rtr.fra.vtr.as211167.net
    address: REDACTED
    network:
      name: production
      display_name: AS211167
    credential:
      username: REDACTED
      password: REDACTED
    port: 22
    nos: vyos
    vrfs:
      - name: global
        default: true
        ipv4:
          source_address: REDACTED

Logs

❌ Error building UI:
Messages:

Errors:
> Build error occurred
SyntaxError: /tmp/hyperglass_7ounc0yp.json: Unexpected end of JSON input
    at parse (<anonymous>)
    at Object.Module._extensions..json (internal/modules/cjs/loader.js:1128:22)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:14)
    at Module.require (internal/modules/cjs/loader.js:974:19)
    at require (internal/modules/cjs/helpers.js:92:18)
    at Object.<anonymous> (/usr/local/lib/python3.7/dist-packages/hyperglass/ui/next.config.js:3:16)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Module.load (internal/modules/cjs/loader.js:950:32)

Possible Solution

Environment

Debian 10 LXC container 2GB/2C

Server

❕ Please copy & paste this table in your bug report:

Metric	Value
hyperglass Version	1.0.3
hyperglass Path	/etc/hyperglass
Python Version	3.7.3
Platform Info	Linux-5.4.119-1-pve-x86_64-with-debian-10.10
CPU Info	AMD Ryzen 5 3600 6-Core Processor
Logical Cores	2
Physical Cores	6
Processor Speed	3.6014085GHz
Total Memory	2.15 GB
Memory Utilization	5.2%
Total Disk Space	17.18 GB
Disk Utilization	11.8%

Client

• OS & Version: Windows 10
• Browser: MS Edge (Chromium ver.)

[thatmattlove]

I’m marking this as fixed-in-next-release, as I’ve completely done away with the /tmp/hyperglass.env.json file/concept in v2.0. I’ll leave this open until that release is available, in case others come across the same issue.

[ssh-sysadmin]

Am getting this same issue. Output of /tmp/hyperglass_xxxxxxxx.json using node commands above: https://www.toptal.com/developers/hastebin/ogayakaset.less

Metric	Value
hyperglass Version	1.0.4
hyperglass Path	/etc/hyperglass
Python Version	3.8.10
Node Version	14.19.0
Platform Info	Linux-5.4.124-1-pve-x86_64-with-glibc2.29
CPU Info	Intel® Xeon® CPU E5-2690 v2 @ 3.00GHz
Logical Cores	6
Physical Cores	20
Processor Speed	3.006451825GHz
Total Memory	4.29 GB
Memory Utilization	3.6%
Total Disk Space	53.69 GB
Disk Utilization	4.4%

Running in Ubuntu 20.04.3 LXC within Proxmox.