Unable to create S3Buckets through serverless.yml - amazon-s3

Question

I simply tried to add a new S3Bucket into the Resources section and the stack is not being built anymore:
resources:
Resources:
myBucket:
Type: AWS::S3::Bucket
Properties:
BucketName: prefix-${self:custom.env.myvar}-myBucket
and the error I'm getting is not helping too much:
Template format error: Unresolved resource dependencies
[] in the Resources block of the template (nothing between the [] that could indicate what to look for)
Any idea what's going on?
I'm running serverless v1.5.0
serverless.yml
service: myService
frameworkVersion: "=1.5.0"
custom:
env: ${file(./.variables.yml)}
provider:
name: aws
runtime: nodejs4.3
stage: ${opt:stage, self:custom.env.stage}
region: ${self:custom.env.region}
profile: myProfile-${opt:stage, self:custom.env.stage}
memorySize: 128
iamRoleStatements:
- Effect: "Allow"
Action:
- "lambda:InvokeFunction"
Resource: "*"
- Effect: "Allow"
Action:
- "s3:ListBucket"
Resource: { "Fn::Join" : ["", ["arn:aws:s3:::", { "Ref" : "ServerlessDeploymentBucket" } ] ] }
- Effect: "Allow"
Action:
- "s3:PutObject"
Resource:
Fn::Join:
- ""
- - "arn:aws:s3:::"
- "Ref" : "ServerlessDeploymentBucket"
- "Ref" : ""
functions:
myFunction:
handler: functions/myFunction.handler
name: ${opt:stage, self:custom.env.stage}-myFunction
resources:
Resources:
myBucket:
Type: AWS::S3::Bucket
Properties:
BucketName: myService-${opt:stage, self:custom.env.myVar}-myBucket

Answer 1

The Reference to an empty-string in your iamRoleStatements section, - "Ref" : "", is likely causing the Unresolved resource dependencies [] error. Remove this line from your template, since it seems to be unnecessary.