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You don't need to wrap anything using `pulumi.all` in this case.
``` const publicRouteTableAssociation = new         aws.ec2.RouteTableAssociation("publicRouteTableAssociation", {
    routeTableId: publicRouteTable.id,
    subnetId: subnet_public[0].id
  });```

However you need one association per subnet, so maybe you should create the associations inside the loop.

I’ve done it with a separate loop, but creating the association in the same loop is even better (now I need to go refactor my code!).