Hass.io log question

Hey All,
Could someone please tell me what causes this error in my hass.io log:
18-06-25 13:53:35 ERROR (MainThread) [hassio.addons.git] Can’t pull https://github.com/bestlibre/hassio-addons repo: Cmd(‘git’) failed due to: exit code(1)
cmdline: git pull -v origin
stderr: ‘error: Your local changes to the following files would be overwritten by merge:
.travis.yml
caddy_proxy/README.md
caddy_proxy/config.json
caddy_proxy/run.sh
caddy_proxy/vhost.mustache
grafana/build.json
mopidy/Dockerfile
mopidy/config.json
mopidy_cast/config.json
nginx_proxy/config.json
nginx_proxy/vhost.mustache
syncthing/config.json
Please commit your changes or stash them before you merge.
Aborting’.

It happens over and over. Here is another example:
18-06-25 13:53:34 ERROR (MainThread) [hassio.addons.git] Can’t pull https://github.com/home-assistant/hassio-addons repo: Cmd(‘git’) failed due to: exit code(1)
cmdline: git pull -v origin
stderr: 'error: Your local changes to the following files would be overwritten by merge:
bluetooth_bcm43xx/CHANGELOG.md
bluetooth_bcm43xx/config.json
bluetooth_bcm43xx/firmware/BCM43430A1.hcd
bluetooth_bcm43xx/logo.png
check_config/logo.png
This was truncated beacuse it is about 40 lines long.

Any ideas what’s up?

Thanks
B