phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e14c8a88daf0f2f5e5bddea51627f211', -1, 1714001395, 1714001395, '12e00019', -10, 0, 0)

Line : 187
File : sessions.php