NPOIOpenXml4NetExceptionsOpenXML4NetRuntimeExceptionFail to save an error occurs while saving the package Must support writing Parameter baseOutputStream

This error occurs when the NPOI library is unable to save a package due to an issue with the output stream. Specifically, the error message indicates that the library requires support for writing to the output stream, but this support is not present.

To resolve this error, you should check that the output stream you are using to save the package supports writing. You may also need to ensure that the correct permissions are in place to allow writing to the output stream.

If you continue to experience this error, you may need to consult the NPOI documentation or seek assistance from the library's support team.