[opt]: add error msg when json marshal fail #31

	name: LinDB Common CI
	on: [push, pull_request]
	jobs:
	test-with-coverage:
	name: Uint Test With Coverage
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v3
	with:
	fetch-depth: 1
	- name: Setup Go
	uses: actions/setup-go@v3
	with:
	go-version: 1.22
	cache: true
	id: go
	- name: Test
	run: make test
	- name: Upload
	run: bash <(curl -s https://codecov.io/bash) -t ${{ secrets.CODECOV_TOKEN }}

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