Can't create a postgres data source

[chelomontilla]

Hello,
I'm trying to create a new datasource of type "pg" (Postgres) but I always get the following error:

│ Error: 400 from POST request to https://localhost:8080/api/data_sources: {"message": "The browser (or proxy) sent a request that this server could not understand."}
│ 
│   with module.redash_config.redash_data_source.test,
│   on ../../modules/redash_config/datasources.tf line 2, in resource "redash_data_source" "test":
│    2: resource "redash_data_source" "test" {
│ 
╵

The configuration for the datasource is:

resource "redash_data_source" "test" {
  name = "test"
  type = "pg"

  options {
    host     = "test.com"
    port     = 5432
    dbname   = "test"
    user     = "u_redash"
    password = "123456"
  }
}

If I try to send same configuration to the api directly it works:

{
    "name": "test",
    "type": "pg",
    "options": {
        "dbname": "test",
        "host": "test.com",
        "user": "u_redash",
        "password": "123456",
        "port": 5432
    }
}

I'm not sure what is the problem. Is there anyway to test and see what request the provider is sending to the API? I'm happy to help with the provider :)
The redash version I'm using is v10.1.0