Scheduled Refresh Failing while Desktop Refresh Succeeds

Getting the following error when auto-refreshing a report. The script is setup to split contents of a cell like ABC123 into ABC & 123. This runs perfectly fine on the desktop, but fails with autoupdate. The following error is displayed. Any ideas?

" The import Splitter.SplitTextByCharacterTransition matches no exports. Did you miss a module reference? "