If the Drupal is installed inside a subdirectory e.g.: cms and the base url is like http://localhost/cms the widget cannot work because the tus endpoint will be /cms/tus/upload and the upload complete path will be /cms/tus/upload-complete/.
Create a new composer project, move the contents of the web directory into a cms subdirectory and update the composer.json to use web/cms as the web-root, try to use uppy widget.
The widget has to deal with base path.
Please add \Drupal::request()->getBasePath() to the settings array in UppyWidget::formElement() that is used by the uppy_integration.js, and prefix the tus endpoint path and the upload complete path with it. Or make the base path configurable.
Fixed
2.0
Code
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Issue #3260214 by pauger, Matroskeen: Add the base path to...
Automatically closed - issue fixed for 2 weeks with no activity.