Checkout tags/v4.3.0 , local changes to the following files would be overwritten by checkout

Hi

I cannot update my passpolt application v.4.0.2 to v4.3.0
What can I do?

sudo -su nginx git checkout tags/v4.3.0
error: Your local changes to the following files would be overwritten by checkout:
plugins/PassboltCe/Folders/src/Notification/Email/DeleteFolderEmailRedactor.php
plugins/PassboltCe/Folders/src/Notification/Email/ShareFolderEmailRedactor.php
plugins/PassboltCe/Folders/src/Notification/Email/UpdateFolderEmailRedactor.php
plugins/PassboltCe/Folders/tests/TestCase/Controller/Folders/FoldersCreateControllerTest.php
plugins/PassboltCe/Folders/tests/TestCase/Controller/FoldersRelations/FoldersRelationsMoveControllerTest.php
plugins/PassboltCe/Folders/tests/TestCase/Service/Folders/FoldersDeleteServiceTest.php
plugins/PassboltCe/Folders/tests/TestCase/Service/Folders/FoldersShareServiceTest.php
plugins/PassboltCe/Folders/tests/TestCase/Service/Folders/FoldersUpdateServiceTest.php
webroot/locales/it-IT/common.json
webroot/locales/ko-KR/common.json
webroot/locales/pt-BR/common.json
webroot/locales/ro-RO/common.json
Please, commit your changes or stash them before you can switch branches.
Aborting

sudo -su nginx git stash

*** Please tell me who you are.

Run

git config --global user.email “you@example.com
git config --global user.name “Your Name”

to set your account’s default identity.
Omit --global to set the identity only in this repository.

fatal: unable to auto-detect email address (got ‘nginx@mis-01l-passbolt-test.(none)’)

sudo -su nginx git config --global user.name “Your Name”
error: could not lock config file /var/cache/nginx/.gitconfig: Keine Berechtigung

Thank you and best regards