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 ('3164baa255d42bff0f299b28cc0c9532', -1, 1713983363, 1713983363, '038a8dca', -2, 0, 0)

Line : 187
File : sessions.php