Error while installing the the Excel Report Builder package.

Hi Community,

Currently we are in the middle of migrating our projects from Creatio version 7.18 to 8.0.1. To do that, we have installed new Creatio machines on our servers, and the packages for each project. However, we are getting some errors while installing these packages on the new Creatio 8 machines. 

One of the packages that we are trying to install is this one:

https://marketplace.creatio.com/app/excel-reports-builder-creatio

While installing this package we got the folllowing errors:

2022-05-26 11:15:05,856 [33] INFO Supervisor InstallZipPackage Save - Compiling configuration dll
2022-05-26 11:15:33,238 [33] INFO Supervisor InstallZipPackage Save - Errors and (or) warnings occurred while compiling configuration dll
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(110,11) error CS0246: The type or namespace name 'ExcelWorksheet' could not be found (are you missing a using directive or an assembly reference?)
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(273,31) error CS0246: The type or namespace name 'ExcelWorksheet' could not be found (are you missing a using directive or an assembly reference?)
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(84,49) error CS0246: The type or namespace name 'ExcelPackage' could not be found (are you missing a using directive or an assembly reference?)
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(20,8) error CS0246: The type or namespace name 'OfficeOpenXml' could not be found (are you missing a using directive or an assembly reference?)
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(84,11) error CS0246: The type or namespace name 'ExcelWorksheet' could not be found (are you missing a using directive or an assembly reference?)
2022-05-26 11:15:33,277 [33] ERROR Supervisor InstallZipPackage LogCompilerResult - Autogenerated/Src/IntReportHelper.IntExcelExport.cs(110,54) error CS0246: The type or namespace name 'ExcelPackage' could not be found (are you missing a using directive or an assembly reference?)

I did a full system source code generation and multiple compilations, and the error persists.

Is there any way to fix this?

Best Regards,

Pedro Pinheiro