Terraform plan fails - "error configuring Terraform AWS Provider: no valid credential sources for Terraform AWS Provider found."

Terraform Providers AWS
1

Hello, i’ve created a multi provider deployment - while it works locally from my machine, in the pipeline it fails with “InvalidIdentityToken: Couldn’t retrieve verification key from your identity provider, please reference AssumeRoleWithWebIdentity documentation for requirements status code: 400”

This is the provider file:

terraform {
  required_version = ">= 0.13.0"

  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = ">= 3.1.15"
    }
  }
}


provider "aws" {
  region  = "ap-northeast-2"
  alias   = "ap-northeast-2"
}
provider "aws" {
  region  = "ap-northeast-1"
  alias   = "ap-northeast-1"
}
...
...

as part of the setting up the env var, we use $AWS_WEB_IDENTITY_TOKEN_FILE environment variable. and then it fails

Error: error configuring Terraform AWS Provider: no valid credential sources for Terraform AWS Provider found.

Please see https://registry.terraform.io/providers/hashicorp/aws
for more information about providing credentials.

Error: WebIdentityErr: failed to retrieve credentials
caused by: InvalidIdentityToken: Couldn't retrieve verification key from your identity provider,  please reference AssumeRoleWithWebIdentity documentation for requirements
	status code: 400, request id: 1e15aed2-804d-4e00-aa67-6ced459d24e0


  with module.base-multi-region-resources.provider["registry.terraform.io/hashicorp/aws"].eu-central-1,
  on ../../modules/base-multi-region-resources/versions.tf line 32, in provider "aws":
  32: provider "aws" {


Error: error configuring Terraform AWS Provider: no valid credential sources for Terraform AWS Provider found.

Please see https://registry.terraform.io/providers/hashicorp/aws
for more information about providing credentials.

Error: WebIdentityErr: failed to retrieve credentials
caused by: InvalidIdentityToken: Couldn't retrieve verification key from your identity provider,  please reference AssumeRoleWithWebIdentity documentation for requirements
	status code: 400, request id: 07a89838-9fea-41f0-88e9-12d271212a64


  with module.base-multi-region-resources.provider["registry.terraform.io/hashicorp/aws"].eu-west-1,
  on ../../modules/base-multi-region-resources/versions.tf line 97, in provider "aws":
  97: provider "aws" {

I have no idea what to do, when applying it locally with my AWS creds it works…