Thread:Project:Support desk/Edit toolbar's gone missing/reply (5)

Look the source file which gives the error:. At the end of the file, your hosting is injecting HTML code that breaks the script. It's supposed to be a JavaScript file, no HTML is permitted there, hence the error.

Look if you can disable that in your host's control panel, or ask your host for support for removing that. It's common for free hosting service to inject codes so ads appear on pages. If that's the case you should move to another (paid) hosting.