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I’m getting a lot of this kind of thing when modifying security group rules:
```
Do you want to perform this update? yes
Updating stack 'vault-dev'
Performing changes:

     Type                                      Name                         Status                  Info
 *   pulumi:pulumi:Stack                       pulumi-vault-test-vault-dev  done
 *   └─ operator-error:aws:vault:VaultServers  algo-vault-servers           unchanged
 ~      └─ aws:ec2:SecurityGroup               algo-vault-server-sg         **updating failed**     changes: ~ ingress, 2 errors

Diagnostics:
  aws:ec2:SecurityGroup: algo-vault-server-sg
    error: Plan apply failed: updating urn:pulumi:vault-dev::pulumi-vault-test::operator-error:aws:vault:VaultServers$aws:ec2/securityGroup:SecurityGroup::algo-vault-server-sg: Error revoking security group ingress rules: InvalidPermission.NotFound: The specified rule does not exist in this security group.
    	status code: 400, request id: 72b0d525-f31f-4fff-a0dc-7229cfb50af3

    error: update failed

info: no changes required:
      50 resources unchanged
```