whenever aws stack or resource fails while running/or provisioning it gives a hash and usually misunderstood as random characters is thrown on the screen. we can decode it to get the exact error. Run the below command to decode:
aws sts decode-authorization-message outputhashas below:
aws sts decode-authorization-message E4b1KSUCKogIVJ60KwFUI_DfvQf28hjKUVPnBGFwqU6ar8PceUpbe1uZo9smUllfpteI3ZNWFV56PcgWyUpJTUvR0xMAy8WJzBNoiH-3DikSyPCQ0fqSNLuAkCM-RAIGwZx5B3bleOD-FHF_yJSxjNT4wLlsh0Wj-zDQbAOH6WbxnY5u2cNYAZNlPgV2i5-Lqgs5oRkpTcjMmahtO9KQzjhfZ5HEvaZR2uxE76C2OJ_5Ys2n-kUWSMm_eZ_5BDzKq1KmqBotGbp98ZbYRYuRMxQlfVYVOF-H53jn8ySymFqQbOhBG6f4EAhqhNUmQUH7LfTC4S2zX-CQQXwdkDPvbx1RbUhIJwp5UnVPd0qxFo8oUfeuX8o3W6xfbEsFK