Discuz! Database Error

(1062) Duplicate entry 'userstats' for key 'PRIMARY'
REPLACE INTO common_syscache SET `cname`='userstats' , `ctype`='1' , `dateline`='1550708178' , `data`='a:2:{s:12:\"totalmembers\";i:536;s:10:\"newsetuser\";s:10:\"dy08b2dl37\";}'

PHP Debug

No.FileLineCode
1index.php130require(%s)
2home.php41require_once(%s)
3source/module/home/home_space.php71showmessage(%s)
4source/function/function_core.php1416dshowmessage(%s, %s, Array, Array, %d)
5source/function/function_message.php239include(%s)
6data/template/1_1_common_showmessage.tpl.php1hookscriptoutput(%s)
7source/function/function_core.php1204hookscript(%s, %s)
8source/function/function_core.php1167plugin_nimba_regs->global_header(Array)
9source/plugin/nimba_regs/regs.class.php24creatuser(%d, %s)
10source/plugin/nimba_regs/function/regs.fun.php59creat_new(%s, %s, %s, %s)
11source/plugin/nimba_regs/function/regs.fun.php91build_cache_userstats()
12source/function/cache/cache_userstats.php25savecache(%s, Array)
13source/function/function_core.php790table_common_syscache->insert(%s, Array)
14source/class/table/table_common_syscache.php93discuz_table->insert(Array, false, true)
15source/class/discuz/discuz_table.php81discuz_database::insert(%s, Array, false, true, false)
16source/class/discuz/discuz_database.php60discuz_database::query(%s, %s, %s, true)
17source/class/discuz/discuz_database.php136db_driver_mysql->query(%s, %s, true)
18source/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
19source/class/db/db_driver_mysql.php224break()
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