How to connect grafana to influxdbv2 by InfluxQL method

Hi,
Like you said, it’s work for me i can connect from grafana to influxdbv2.0.3 by influxQL method.
Here is my configure data source on grafana
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But in the end I can not query to database of influxdbv2.0.3 with error
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Datasource is fine but cannot query to it ?. Can you help me ? many tks