I tried to uninstall MySQL and Nginx and got this Error Message>
An error has occured
Error #0:exception 'OMV\ExecException' with message 'Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; export DEBIAN_FRONTEND=noninteractive; apt-get --yes --auto-remove --purge remove openmediavault-mysql openmediavault-nginx 2>&1': Reading package lists...Building dependency tree...Reading state information...The following packages will be REMOVED: dbconfig-common* mywebsql* openmediavault-mysql* openmediavault-nginx* php5* php5-mysqlnd* php5-pgsql* php5-sqlite*0 upgraded, 0 newly installed, 8 to remove and 0 not upgraded.After this operation, 6931 kB disk space will be freed.(Reading database ...(Reading database ... 5%(Reading database ... 10%(Reading database ... 15%(Reading database ... 20%(Reading database ... 25%(Reading database ... 30%(Reading database ... 35%(Reading database ... 40%(Reading database ... 45%(Reading database ... 50%(Reading database ... 55%(Reading database ... 60%(Reading database ... 65%(Reading database ... 70%(Reading database ... 75%(Reading database ... 80%(Reading database ... 85%(Reading database ... 90%(Reading database ... 95%(Reading database ... 100%(Reading database ... 34946 files and directories currently installed.)Removing openmediavault-mysql (3.0.3) ...Purging configuration files for openmediavault-mysql (3.0.3) ...Removing dbconfig-common (1.8.47+nmu3+deb8u1) ...Purging configuration files for dbconfig-common (1.8.47+nmu3+deb8u1) ...Removing mywebsql (3.6-omv4) ...Purging configuration files for mywebsql (3.6-omv4) ...rm: cannot remove '/var/lib/mywebsql': No such file or directorydpkg: error processing package mywebsql (--purge): subprocess installed post-removal script returned error exit status 1Removing openmediavault-nginx (3.0.5) ...Purging configuration files for openmediavault-nginx (3.0.5) ...Removing php5 (5.6.24+dfsg-0+deb8u1) ...Removing php5-mysqlnd (5.6.24+dfsg-0+deb8u1) ...php5_invoke prerm: Disable module mysqlnd for cli SAPIphp5_invoke prerm: Disable module mysqlnd for fpm SAPIphp5_invoke prerm: Disable module mysqlnd for cgi SAPIphp5_invoke prerm: Disable module mysql for cli SAPIphp5_invoke prerm: Disable module mysql for fpm SAPIphp5_invoke prerm: Disable module mysql for cgi SAPIphp5_invoke prerm: Disable module mysqli for cli SAPIphp5_invoke prerm: Disable module mysqli for fpm SAPIphp5_invoke prerm: Disable module mysqli for cgi SAPIphp5_invoke prerm: Disable module pdo_mysql for cli SAPIphp5_invoke prerm: Disable module pdo_mysql for fpm SAPIphp5_invoke prerm: Disable module pdo_mysql for cgi SAPIPurging configuration files for php5-mysqlnd (5.6.24+dfsg-0+deb8u1) ...Removing php5-pgsql (5.6.24+dfsg-0+deb8u1) ...php5_invoke prerm: Disable module pgsql for cli SAPIphp5_invoke prerm: Disable module pgsql for fpm SAPIphp5_invoke prerm: Disable module pgsql for cgi SAPIphp5_invoke prerm: Disable module pdo_pgsql for cli SAPIphp5_invoke prerm: Disable module pdo_pgsql for fpm SAPIphp5_invoke prerm: Disable module pdo_pgsql for cgi SAPIPurging configuration files for php5-pgsql (5.6.24+dfsg-0+deb8u1) ...Removing php5-sqlite (5.6.24+dfsg-0+deb8u1) ...php5_invoke prerm: Disable module sqlite3 for cli SAPIphp5_invoke prerm: Disable module sqlite3 for fpm SAPIphp5_invoke prerm: Disable module sqlite3 for cgi SAPIphp5_invoke prerm: Disable module pdo_sqlite for cli SAPIphp5_invoke prerm: Disable module pdo_sqlite for fpm SAPIphp5_invoke prerm: Disable module pdo_sqlite for cgi SAPIPurging configuration files for php5-sqlite (5.6.24+dfsg-0+deb8u1) ...Processing triggers for openmediavault (3.0.35) ...Restarting engine daemon ...Processing triggers for man-db (2.7.0.2-5) ...Processing triggers for php5-fpm (5.6.24+dfsg-0+deb8u1) ...Errors were encountered while processing: mywebsqlCreating index of upgradeable packages ...Creating index of openmediavault plugins ...E: Sub-process /usr/bin/dpkg returned an error code (1)' in /usr/share/openmediavault/engined/rpc/pluginmgmt.inc:160Stack trace:#0 [internal function]: OMVRpcServicePluginMgmt->remove(Array, Array)#1 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)#2 /usr/share/php/openmediavault/rpc/rpc.inc(84): OMV\Rpc\ServiceAbstract->callMethod('remove', Array, Array)#3 /usr/sbin/omv-engined(516): OMV\Rpc\Rpc::call('Plugin', 'remove', Array, Array, 1)#4 {main}