Burial0268 try using gbcl-fof-upload-ext-qcloud as the extension ID in src/admin/index.js line 10.
The Flarum extension ID is created by taking the Composer package name, replacing / with - and removing flarum- or flarum-ext-. If there's ext- alone in the string it will be part of the extension ID.
By convention the same value is generally also used as the translation namespace/prefix but this is not required, the translations will work fine if their namespace doesn't match the extension ID.
