Error uploading image to Behance from Lightroom 5.6

When uploading an image to Behance from Lightroom 5.6, you receive the following error: "Failed to upload a WIP update to Behance: invalid permissions or request type."

Update Lightroom 5.6 to Lightroom 5.7.1 or later.

Mac OS

1. Quit Lightroom.
2. Download the file WichitaFoundation.agtoolkit.zip below.
3. Double-click the downloaded file to unzip it. The resulting file is WichitaFoundation.agtoolkit.
4. In your Applications folder, control-click on the Lightroom application file, and choose Show Package Contents.
5. Choose Contents > Frameworks.
6. Drag the unzipped WichitaFoundation.agtoolkit file into the Frameworks folder.
7. If you are prompted to authenticate, click Authenticate.
8. When you are prompted to replace the file, click Replace.
9. Enter your system password if required.
10. Open Lightroom.