Endpoint :- org_url/services/data/v58.0/jobs/ingest/
header
Method :- POST
Content-Type :- multipart/form-data; boundary=”BOUNDARY”
Accept :- application/json

Body :-
–BOUNDARY
Content-Type: application/json
Content-Disposition: form-data; name=”job”

{
“object”:”Contact”,
“contentType”:”CSV”,
“operation”: “insert”,
“lineEnding” : “LF”
}

–BOUNDARY
Content-Type: text/csv
Content-Disposition: form-data; name=”content”; filename=”content”

FirstName,LastName,MailingCity
Astro,Nomical,San Francisco
Hootie,McOwl,San Francisco
Appy,Camper,San Francisco
Earnie,Badger,San Francisco
–BOUNDARY–

in JSON

working fine at workbench, but getting “Mixed content error: cannot send request.
The request has been blocked because it requested an insecure HTTP resource.” in postman

Can anyone the reason of error and how to slove it