How to debug vega-lite specification? No data points seen plotted - vega-lite

Question

I have the following vega-lite specification (open vega-editor)
It seems very straightforward, but I don't see any data point being plotted.
There is no error, but a bunch of warnings, which I cannot make out to fix the problem.
I'd like to learn how to debug to vega-lite specifications. Or get help to correct some stupid mistakes of mine.
EDIT: (to keep the completeness of the lessons learned, here is the specification snippet, and the warnings:)
{
"mark": "tick",
"encoding": {
"y": {"field": "arrival-time", "type": "temporal"},
"x": {"field": "eta-variance", "type": "quantitative"}
},
"data": [
{"arrival-time": "2021-07-31 07:07:04", "eta-variance": -30},
{"arrival-time": "2021-07-31 07:07:04", "eta-variance": -51},
{"arrival-time": "2021-07-31 07:31:06", "eta-variance": -357},
{"arrival-time": "2021-07-31 07:31:06", "eta-variance": -395},
{"arrival-time": "2021-07-31 07:32:55", "eta-variance": -248},
{"arrival-time": "2021-07-31 07:32:55", "eta-variance": -286},
{"arrival-time": "2021-07-31 07:40:55", "eta-variance": -14},
{"arrival-time": "2021-07-31 07:40:55", "eta-variance": 34},
{"arrival-time": "2021-07-31 07:40:55", "eta-variance": 0},
{"arrival-time": "2021-07-31 07:40:55", "eta-variance": -12}
]
}
[Warning] Validation: /data must be object of #/type
[Warning] Validation: /data must be object of #/type
[Warning] Validation: /data must be object of #/type
[Warning] Validation: /data must match a schema in anyOf of #/anyOf
[Warning] Validation: /data must be object of #/type
[Warning] Validation: /data must be object of #/definitions/SphereGenerator/type
[Warning] Validation: /data must be object of #/type
[Warning] Validation: /data must match a schema in anyOf of #/anyOf
[Warning] Validation: /data must match a schema in anyOf of #/anyOf
[Warning] Validation: /data must be null of #/properties/data/anyOf/1/type
[Warning] Validation: /data must match a schema in anyOf of #/properties/data/anyOf
[Warning] Validation: must have required property 'facet' of #/required
[Warning] Validation: must have required property 'layer' of #/required
[Warning] Validation: must have required property 'repeat' of #/anyOf/0/required
[Warning] Validation: must have required property 'repeat' of #/anyOf/1/required
[Warning] Validation: must match a schema in anyOf of #/anyOf
[Warning] Validation: must have required property 'concat' of #/required
[Warning] Validation: must have required property 'vconcat' of #/required
[Warning] Validation: must have required property 'hconcat' of #/required
[Warning] Validation: must match a schema in anyOf of #/anyOf
[Warning] Infinite extent for field "eta-variance": [Infinity, -Infinity]
[Warning] Infinite extent for field "arrival-time": [Infinity, -Infinity]
[Warning] Infinite extent for field "eta-variance": [Infinity, -Infinity]
[Warning] Infinite extent for field "arrival-time": [Infinity, -Infinity]

Answer 1

Mikhail Akimov spotted my mistake that the specification of data was wrong.
The proper specification should be
{"data": {"values": [...]}
...}
The mistake is missing "values": and the associated structure.
The moral of the story is that vega-lite warnings are actually could be errors, and when it does not work, the warnings should be addressed as errors.