43 Merge workbooks

14:26:32 Load MergeBook1 from Excel2007 file
14:26:32 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook1.xlsx in 0.0261 seconds
14:26:32 Load MergeBook2 from Excel2007 file
14:26:32 Read Excel2007 format from /home/factovizjh/legitrack_test/vendor/phpoffice/phpspreadsheet/samples/templates/43mergeBook2.xlsx in 0.0059 seconds
14:26:32 Write Excel2007 format to /tmp/phpspreadsheet/43_Merge_workbooks.xlsx in 0.0030 seconds
14:26:32 Write Excel5 format to /tmp/phpspreadsheet/43_Merge_workbooks.xls in 0.0070 seconds
14:26:32 Peak memory usage: 6.5MB