The server often has to build the ZIP in a temporary directory. If dozens of users try to create 10GB ZIPs simultaneously, the server's temporary storage could fill up. Technical Workarounds for Developers
If you are a developer or admin seeing this error on your own platform, you may need to adjust your configuration. total size of requested files is too large for ziponthefly
Instead of selecting every folder at once, select two or three main folders at a time. Smaller requests stay under the ZipOnTheFly limit. The server often has to build the ZIP