How to set writable permissions
From Galaxytool wiki
This text is important for the installation/update to Galaxytool v5.0.0 and above and describes, how to give writable permissions to the config-folder using Filezilla.
1. Connecto to your Webspace via FTP
2. find the config folder
3. Click on the config-folder with your right mouse button
4. Click on "File permissions"
5. Give the folder the numeric value 777
6. Tick "Recurse into subdirectories". Finally it should look like this:
7. click on OK