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 ('aa31a127c3a4a5763f787d6f42902b7c', -1, 1713924469, 1713924469, '12e095f2', -7, 0, 0)

Line : 187
File : sessions.php