invalid write key

[esmaeilram]

i generated workspace.json from the dashboard, I added it to rudderstack and it's imported properly in rudder-stack backend pod but I still get an invalid write-key error when I send a post request to my data plane.
webhook post
http://dataplane-url/v1/webhook?writeKey=$writekey
{
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
},
"message": {
// RudderStack HTTP Payload (identify, track, etc.)
}
}
ps

response is :

ps: My webhook post is working in rudderstack dashboard cloud but I want to host the opensource dashboard

any idea?