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 ('eef2971ef8e7b4f6b8fa7212b6fbf426', -1, 1711716032, 1711716032, '22e76d17', -2, 0, 0)

Line : 187
File : sessions.php