On converting a .csv file to .xls file using unoconv, columns goes missing after IV column in xls file. I am using shell_exec to execute the command in the PHP code like --
shell_exec('sudo unoconv -f xls test.csv --output=test.xls')
test.csv contains columns Upto AMJ but test.xls contains columns only upto IV.
How can I convert a large csv file successfully using unoconv?