Users may receive the "Unknown Load Statement Error" error when reloading data from an Excel document.
The excel file is a container format that contains many internal files, some of which have sub-file name in uppercase. The Linux compatible OLE library in the recent version can't match the sub-file names in a case insensitive way.
Resolution:
The workaround in these version is to enable MICROSOFT_OLE_API.
QlikView Server
Stop QlikView Server service and Distribution service