InfluxDB refuses connection from telegraf when changing from HTTP to HTTPS - ssl

Question

In my centos7 server, I have set up Telegraf and InfluxDB. InfluxDB successfully receives data from Telegraf and stores them in the database. But when I reconfigure both services to use https, I see the following error in Telegraf's logs
Dec 29 15:13:11 localhost.localdomain telegraf[31779]: 2020-12-29T13:13:11Z E! [outputs.influxdb] When writing to [https://127.0.0.1:8086]: Post "https://127.0.0.1:8086/write?db=GRAFANA": dial tcp 127.0.0.1:8086: connect: connection refused
Dec 29 15:13:11 localhost.localdomain telegraf[31779]: 2020-12-29T13:13:11Z E! [agent] Error writing to outputs.influxdb: could not write any address
InfluxDB doesn't show any errors in it's logs.
Below is my telegraf.conf file:
[agent]
hostname = "local"
flush_interval = "15s"
interval = "15s"
# Input Plugins
[[inputs.cpu]]
percpu = true
totalcpu = true
collect_cpu_time = false
report_active = false
[[inputs.disk]]
ignore_fs = ["tmpfs", "devtmpfs", "devfs"]
[[inputs.io]]
[[inputs.mem]]
[[inputs.net]]
[[inputs.system]]
[[inputs.swap]]
[[inputs.netstat]]
[[inputs.processes]]
[[inputs.kernel]]
# Output Plugin InfluxDB
[[outputs.influxdb]]
database = "GRAFANA"
urls = [ "https://127.0.0.1:8086" ]
insecure_skip_verify = true
username = "telegrafuser"
password = "metricsmetricsmetricsmetrics"
And this is the uncommented [http] section of the influxdb.conf
# Determines whether HTTP endpoint is enabled.
enabled = false
# Determines whether the Flux query endpoint is enabled.
flux-enabled = true
# The bind address used by the HTTP service.
bind-address = ":8086"
# Determines whether user authentication is enabled over HTTP/HTTPS.
auth-enabled = false
# Determines whether HTTPS is enabled.
https-enabled = true
# The SSL certificate to use when HTTPS is enabled.
https-certificate = "/etc/ssl/server-cert.pem"
# Use a separate private key location.
https-private-key = "/etc/ssl/server-key.pem"