Update Error - version 3.0.0

Piwik version 3.0.0 has been updated but it’s not working.
Showing - 'An error occurred’
Also i got a warning

WARNING: /home/ecocreat/public_html/analytics/vendor/piwik/decompress/libs/PclZip/pclzip.lib.php(4183): Warning - unpack(): Type V: not enough input, need 4, have 0 - Piwik 2.15.1-b11

Please advise.

This warning came from 2.15.1 so not Piwik 3. Are you sure you uploaded all files correctly, maybe re-upload all files

Now it’s working fine. Thanks