ERROR: invalid byte sequence for encoding "UTF8": 0x00

Hi,

Im working on integration between Mysql to postgres, when inserting to postgres I got this error "ERROR: invalid byte sequence for encoding "UTF8": 0x00" Its because of pentaho kettle convert the data to unicode. I try to trim and remove space in string operation but the output still the same. Please help me to solve this issue.

Regards.
Shaffiq