Would someone help me with solution..Im using Elementary Os..Thanks

kadahawa@kadahawa-desktop:~/Documents/Wordwise creator$ ./wisecreator GO.mobi
[.] Checking dependenices
[.] Converting mobi 2 mobi to generate ASIN
Traceback (most recent call last):
File "/usr/bin/ebook-convert", line 20, in <module>
sys.exit(main())
File "/usr/lib/calibre/calibre/ebooks/conversion/cli.py", line 391, in main
plumber.run()
File "/usr/lib/calibre/calibre/ebooks/conversion/plumber.py", line 1088, in run
accelerators, tdir)
File "/usr/lib/calibre/calibre/customize/conversion.py", line 245, in __call__
log, accelerators)
File "/usr/lib/calibre/calibre/ebooks/conversion/plugins/mobi_input.py", line 23, in convert
from calibre.ebooks.mobi.reader.mobi6 import MobiReader
File "/usr/lib/calibre/calibre/ebooks/mobi/reader/mobi6.py", line 24, in <module>
from calibre.utils.img import save_cover_data_to
File "/usr/lib/calibre/calibre/utils/img.py", line 18, in <module>
from PyQt5.QtGui import QColor, QImage, QImageReader, QImageWriter, QPixmap, QTransform
ImportError: /tmp/_MEIrakN6b/libz.so.1: version `ZLIB_1.2.9' not found (required by /usr/lib/x86_64-linux-gnu/libpng16.so.16)
[-] Failed to convert mobi 2 mobi:
| Command 'ebook-convert "/home/kadahawa/Documents/Wordwise creator/GO.mobi" "/home/kadahawa/Documents/Wordwise creator/GO-WordWised/GO.mobi"' returned non-zero exit status 1
kadahawa@kadahawa-desktop:~/Documents/Wordwise creator$