When running atlantis plan... getting this error

[darkside720]

running "/atlantis-data/bin/terraform0.15.5 init -input=false -upgrade" in "/atlantis-data/repos/abc/tf-deploy-aws-atlantis/1/default": exit status 1
In Terraform Init and Plan

Initializing the backend...
╷
│ Warning: Version constraints inside provider configuration blocks are deprecated
│
│ on provider_aws.tf line 3, in provider "aws":
│ 3: version = "~> 0.13"
│
╷
│ Terraform 0.13 and earlier allowed provider version constraints inside the
│ Error: error configuring S3 Backend: IAM Role (arn:aws:iam::0000000000:role/AssumeDevelopersRoleInDevelopment) cannot be assumed.
│
│ provider configuration block, but that is now deprecated and will be
│ removed in a future version of Terraform. To silence this warning, move the
│ There are a number of possible causes of this - the most common are:
│ * The credentials used in order to assume the role are invalid
│ provider version constraint into the required_providers block.
╵
│ * The credentials do not have appropriate permission to assume the role
│ * The role ARN is not valid

│
│ Error: NoCredentialProviders: no valid providers in chain. Deprecated.
│ For verbose messaging see aws.Config.CredentialsChainVerboseErrors
│
│
│
╵