Invalid Bug ID

Sorry, I can't find "1504300","who":"","why":"","name":"","created":"2018-11-02T11:49:33Z"},"enabled":true,"issuerName":"MDsxGDAWBgNVBAoTD0N5YmVydHJ1c3QsIEluYzEfMB0GA1UEAxMWQ3liZXJ0cnVzdCBHbG9iYWwgUm9vdA==","serialNumber":"AXscEecDK83Ks/XoEFX8RQ==","id":"33b2de43-06a8-4984-85b5-5808c0baa6fd","last_modified":1541184576649},{"schema":1552492993020,"details":{"bug":"https://bugzilla.mozilla.org/show_bug.cgi?id=1504300","who":"","why":"","name":"","created":"2018-11-02T11:49:33Z"},"enabled":true,"issuerName":"MFoxCzAJBgNVBAYTAklFMRIwEAYDVQQKEwlCYWx0aW1vcmUxEzARBgNVBAsTCkN5YmVyVHJ1c3QxIjAgBgNVBAMTGUJhbHRpbW9yZSBDeWJlclRydXN0IFJvb3Q=","serialNumber":"Byd7Zg==","id":"c164ebb8-e020-45c4-ac6b-9bd57b761aa0","last_modified":1541184576330},{"schema":1552492993020,"details":{"bug":"https://bugzilla.mozilla.org/show_bug.cgi?id=1504300","who":"","why":"","name":"","created":"2018-11-02T11:49:33Z"},"en". It does not seem like bug number nor an alias to a bug.

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