禅道从12.5.3升级为15.5后没项目集和执行已解决悬赏10积分

您可以备份一下zt_config表，然后执行：
update zt_config value='new' where `owner` = 'system',`module` = 'common',`section` = 'global',`key` = 'mode';
update zt_config value='0' where `owner` = 'system',`module` = 'custom',`section` = '',`key` = 'sprintConcept';
delete from zt_config where `owner` = 'system',`module` = 'common',`section` = 'global',`key` = 'changedMode';

select * from zt_config where `owner` = 'system' and ((`module` = 'common' and `section` = 'global' and `key` in ('mode','changedMode')) or (`module` = 'custom' and `section` = '' and `key`='sprintConcept'));

select * from zt_config where `owner` = 'system' and ((`module` = 'common' and `section` = 'global' and `key` in ('mode','changedMode')) or (`module` = 'custom' and `section` = '' and `key`='sprintConcept'));

update zt_config set value='new' where `owner` = 'system' and `module` = 'common' and `section` = 'global' and `key` = 'mode';
update zt_config set value='0' where `owner` = 'system' and `module` = 'custom' and `section` = '' and `key` = 'sprintConcept';
delete from zt_config where `owner` = 'system' and `module` = 'common' and `section` = 'global' and `key` = 'changedMode';