phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a1bcba9d8c555631e5f017d426cbbc65' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a1bcba9d8c555631e5f017d426cbbc65', -1, 1714286646, 1714286646, '12daa810', -4, 0, 0)

Line : 187
File : sessions.php