Hey @Majd_Sharkia
Thanks for your response.
Because yesterday I wasn't even able to uninstall any Hotfix Take anymore, I have performed the following Workaround:
Create a system-backup and snapshot in the first place.
After this, I removed the 8GB gaia_api_server.log.
Then I created a new clean/empty gaia_api_server.log.
Because it didn't take effect on the "df -h" output, I restarted the MHO.
After MHO reboot, more disk space was available again on the 120GB SSD and I was able to delete the older Patches.
Best Regards