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 ('f3a1c7ee25d421fd5f6b560248e9c6c1', -1, 1713467625, 1713467625, '12db8229', 2, 0, 0)

Line : 187
File : sessions.php