That means the upload folder is at the same level as the website. Is that what you want to achieve?
If so, you cannot enter the upload path as "sistemas_arquivos/", it is a wrong path, remember that upload folder is relative to the root of the local file system (default is the project folder). Also as explained, you must not use "../", if you enter "../sistemas_arquivos/", it is also an invalid path.
The correct way is to set the root of the local file system to one level higher than the project folder (default is the project folder), see the advanced setting Local file system root (relative to project folder), you may set it to ".." (without quotes).