Fatal error: Uncaught Exception: TCPDF_PARSER ERROR: decodeFilterFlateDecode: invalid code

[haristariqmage4]

Fatal error: Uncaught Exception: TCPDF_PARSER ERROR: decodeFilterFlateDecode: invalid code in /code/vendor/tecnickcom/tcpdf/include/tcpdf_filters.php:474
Stack trace:
#0 /code/vendor/tecnickcom/tcpdf/include/tcpdf_filters.php(359): TCPDF_FILTERS::Error('decodeFilterFla...')
#1 /code/vendor/tecnickcom/tcpdf/include/tcpdf_filters.php(94): TCPDF_FILTERS::decodeFilterFlateDecode('\x17\xA1k\x81xO)rf\x0Ej\x8A5Gw...')
#2 /code/vendor/iio/libmergepdf/tcpdi/tcpdi_parser.php(1158): TCPDF_FILTERS::decodeFilter('FlateDecode', '\x17\xA1k\x81xO)rf\x0Ej\x8A5Gw...')
#3 /code/vendor/iio/libmergepdf/tcpdi/tcpdi_parser.php(1046): tcpdi_parser->decodeStream(Array, '\x17\xA1k\x81xO)rf\x0Ej\x8A5Gw...')
#4 /code/vendor/iio/libmergepdf/tcpdi/tcpdi_parser.php(1082): tcpdi_parser->extractObjectStream(Array)
#5 /code/vendor/iio/libmergepdf/tcpdi/tcpdi_parser.php(193): tcpdi_parser->findObjectOffsets()
#6 /code/vendor/iio/libmergepdf/tcpdi/tcpdi.php(124): tcpdi_parser->__construct('%PDF-1.7\r%\xE2\xE3\xCF\xD3\r...', 'tcpdi-658450563...')
#7 /code/ve in /code/vendor/iio/libmergepdf/src/Driver/TcpdiDriver.php on line 49

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Getting this error when merge pdf, one of them has password. Please guide.