<!--To help us understand and resolve your issue, please fill out the form to the best of your ability. Feel free to delete the sections that do not apply.--> **Description of the problem** All documentation under https://docs.generic-mapping-tools.org is not available giving a http 404 error. Also see forum thread "[GMT online documentation has disappeared](https://forum.generic-mapping-tools.org/t/gmt-online-documentation-has-disappeared/3779)"