Dear all, When I used the koha-3.20.12, the problem was solved. thanks Vijay Kumar le 'kohadata.systempreferences' doesn't exist at /usr/share/koha-3.20.12/blib/PERL_MODULE_DIR/C4/Context.pm line 544. DBD::mysql::db selectrow_array failed: Table 'kohadata.systempreferences' doesn't exist at /usr/share/koha-3.20.12/blib/PERL_MODULE_DIR/C4/Context.pm line 544. DBD::mysql::db selectrow_array failed: Table 'kohadata.systempreferences' doesn't exist at /usr/share/koha-3.20.12/blib/PERL_MODULE_DIR/C4/Context.pm line 544. t/SIPILS.t .......................... ok t/SMS.t ............................. ok t/SocialData.t ...................... ok t/Stats.t ........................... ok t/SuggestionEngine.t ................ ok t/SuggestionEngine_AuthorityFile.t .. ok t/TmplToken.t ....................... ok t/XSLT.t ............................ ok All tests successful. Files=100, Tests=10397, 104 wallclock secs ( 3.03 usr 0.35 sys + 69.78 cusr 5.85 csys = 79.01 CPU) Result: PASS