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Cfreport error for ColdFusion when format is superior

I have a problem when using cfreport with excel format. This error occurs even in a * .cfr file containing only one label.

<cferror template="path/to/error_template.cfm" type="EXCEPTION">

<cfreport template="path/to/cfr_file.cfr" format="excel">
    <cfreportparam name="param1" value="value1">
    <!--- several cfreportparam tag --->
</cfreport>

from the user error template,

  • Diagnostics : (class: net / sf / jasperreports / engine / export / JRXlsExporter, method: createMergeRegion signature: (Lnet / sf / jasperreports / engine / export / JRExporterGridCell; IILorg / apache / poi / hssf / usermodel / HSSFCellStyle;)) Incompatible argument to null.
    Error on line -1.
  • Message : (class: net / sf / jasperreports / engine / export / JRXlsExporter, method: createMergeRegion signature: (Lnet / sf / jasperreports / engine / export / JRExporterGridCell; IILorg / apache / poi / hssf / usermodel / HSSFCellStyle;) V) Incompatible function argument

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:)

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Source: https://habr.com/ru/post/1791121/

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