06 Largescale with cellcaching sqlite3

11:55:10 ERROR: Unable to set Cell Caching using SQLite3 method, reverting to memory
11:55:10 Create new Spreadsheet object
11:55:10 Set properties
11:55:10 Add data
11:55:10 Hide 'Phone' and 'fax' columns
11:55:10 Set outline levels
11:55:10 Freeze panes
11:55:10 Rows to repeat at top
11:55:11 Write Xlsx format to /tmp/phpspreadsheet/06_Largescale_with_cellcaching_sqlite3.xlsx in 0.6965 seconds
11:55:11 Write Xls format to /tmp/phpspreadsheet/06_Largescale_with_cellcaching_sqlite3.xls in 0.3249 seconds
11:55:11 Peak memory usage: 24MB