“ERROR: No modules found to build. All requested binaries were already part of the installed engine data.”
This means that your project doesn’t include code, but has a plugin available that needs to be compiled. The two options here would be to either disable this plugin or add a blank C++ class to your project which can be done via File > New C++ Class… > Next > Create Class.
The former would be preferred if you don’t need the plugin and would actually make all of those rsync problems redundant as you don’t need to use rsync if you’re not compiling any code. The latter would only be suggested if you need to use the plugin that needs to be compiled. I can’t tell exactly from the log which plugin it is, but I do see that Substance is enabled and that is usually what people have enabled when this occurs.
As mentioned before, the “Unknown Error” message, the actual error message is elsewhere. Please try searching the log for the word “Error” by using Ctrl+F and many of the error messages can explain what kind of problem you’re having.
As far as removing the plugin, is the plugin in your Plugins folder in the project’s directory? If so, it would be best to remove it from there and ensure that the project isn’t referencing it at all. If you open your .uproject file with a text editor, you should see something like this:
You can delete the entire plugins entry or just the Substance part. You can also just set its enabled status to False instead of True if you think that you may be using it at a later time.
Yes its in the project’s directory, and I tried to delete the entire plugins entry but when I tried to open the project it has an error of “Couldn’t set association for project. Check the file is writeable”.
Just to let you know, if this continues it may be best to move this to another question, but I’ve converted the comment from earlier that ended up solving the issue with the Rsync problem to an answer and that will be the final answer for this question, since it fixed the original issue.