smtp error!

I have a task that does not define Email event handler. but in the kapacitor log find out error:
ts=2021-06-07T03:20:32.804+08:00 lvl=error msg="failed to send email" service=smtp task=website-check err="service is not enabled"
ts=2021-06-07T03:20:32.804+08:00 lvl=error msg="failed to send email" service=smtp task=website-check err="service is not enabled"
ts=2021-06-07T03:20:32.805+08:00 lvl=error msg="failed to send email" service=smtp task=website-check err="service is not enabled"

task content as follow:
ID: website-check
Error:
Template:
Type: stream
Status: enabled
Executing: true
Created: 24 May 21 08:31 CST
Modified: 24 May 21 08:31 CST
LastEnabled: 24 May 21 08:31 CST
Databases Retention Policies: ["idrac2985"."autogen"]
TICKscript:
dbrp "idrac2985"."autogen"

stream
|from()
.measurement('http_response')
|alert()
.crit(lambda: int("http_response_code") >= 400)
.details('''ServiceFailure: Website access exception
SiteName:{{ index .Fields "sitenamefield" }}
SiteURL: {{ index .Tags "urltag" }}
ResponseCode: {{ index .Fields "http_response_code" }}
''')
.exec('/usr/bin/python3', '/root/sendToWX.py')

DOT:
digraph website-check {
graph [throughput="0.00 points/s"];

stream0 [avg_exec_time_ns="0s" errors="0" working_cardinality="0" ];
stream0 -> from1 [processed="407020"];

from1 [avg_exec_time_ns="9.589µs" errors="0" working_cardinality="0" ];
from1 -> alert2 [processed="407020"];

alert2 [alerts_inhibited="0" alerts_triggered="1674" avg_exec_time_ns="90.378µs" crits_triggered="1536" errors="0" infos_triggered="0" oks_triggered="138" warns_triggered="0" working_cardinality="1" ];
}

I have set smtp is false in the kapacitor.conf. help me solve this issues,THK!

Start with the website-check TICKscript and the SMTP setting in kapacitor.conf, then compare the configured alert actions with the task's .exec('/usr/bin/python3', '/root/sendToWX.py') handler. Reproduce the logged "service is not enabled" error and determine why SMTP is being invoked; done means the task no longer emits the unexpected SMTP error or the configuration requirement is documented.

Written by the indexing model from the issue text.