Unable To create a step function

Hello,
I am trying to create a step function. But unable to create it.
My admin has attached the following permissions to it for IAM ROLE.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"Service": [
"states.us-east-1.amazonaws.com",
"lambda.amazonaws.com"
]
},
"Action": "sts:AssumeRole"
}
]
}

But still I get the following error.

First ERROR after loading Get Started Page:

"Error
There was an issue while loading activity arns, auto complete functionality may be limited."

After filling out name and selecting Catch Failure blueprint and editing ARN. I clicked on Create State Machine.
I get error box on code saying:
"
Error code:
Message:
Error code:
Message:"

Second time when I clicked on Create State Machine. I get to select IAM role and after that a final error:

(On Top of the page)
"Error
There was an issue while loading activity arns, auto complete functionality may be limited.
An error occurred while creating your state machine, please try again.
Error"