Upgrading 11.5 to 12 pls help

[GjemajlK]

the update comes at the end the following error:

4% [####### ] Updating the "widgets" resources... ==========================================================================================================================
# Error: PHP Warning : file_put_contents(/usr/local/sb/htdocs/skins/skin_default.tar.gz/widgets.css): failed to #
# open stream: No such file or directory #
==========================================================================================================================
dpkg: error processing wpb-core (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of wpb-headers:
wpb-headers depends on wpb-core; however:
Package wpb-core is not configured yet.
dpkg: error processing wpb-headers (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of wpb:
wpb depends on wpb-core (>= 12.0.6-859); however:
Package wpb-core is not configured yet.
wpb depends on wpb-headers (>= 12.0.5-71); however:
Package wpb-headers is not configured yet.
dpkg: error processing wpb (--configure):
dependency problems - leaving unconfigured
configured to not write apport reports
configured to not write apport reports
configured to not write apport reports
Errors were encountered while processing:
wpb-core
wpb-headers
wpb
E: Sub-process /usr/bin/dpkg returned an error code (1)