[BUG] vmagent addon reports an error that promethues job cannot be scrape

[sophon-zt]

Error message in the victoria-metrics-agent pod

{"ts":"2024-04-26T03:05:57.761Z","level":"warn","caller":"VictoriaMetrics/lib/promscrape/scrapework.go:377","msg":"cannot scrape target \"http://localhost:9090/metrics\" ({instance=\"localhost:9090\",job=\"prometheus\"}) 1 out of 1 times during -promscrape.suppressScrapeErrorsDelay=0s; the last error: error when scraping \"http://localhost:9090/metrics\": dial tcp4 127.0.0.1:9090: connect: connection refused; try -enableTCP6 command-line flag if you scrape ipv6 addresses"}
{"ts":"2024-04-26T03:06:12.763Z","level":"warn","caller":"VictoriaMetrics/lib/promscrape/scrapework.go:377","msg":"cannot scrape target \"http://localhost:9090/metrics\" ({instance=\"localhost:9090\",job=\"prometheus\"}) 1 out of 1 times during -promscrape.suppressScrapeErrorsDelay=0s; the last error: error when scraping \"http://localhost:9090/metrics\": dial tcp4 127.0.0.1:9090: connect: connection refused; try -enableTCP6 command-line flag if you scrape ipv6 addresses"}

[sophon-zt]