Solution exception:'float' object has no attribute 'header' error

Hello. I receive this error when I change report frequency from hourly to annual in energy simulation. Where is the problem?

This is a bug in the last stable release of LBT (version 1.3). It only happens when the Annual _report_frequency_ is requested. Using the Monthly _report_frequency_ will make it go away. Alternatively, you can update to the latest development version of the plugin with the LB Versioner where this bug has been fixed.