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 ('da638c1259c57ca7e42c67f4bc2c518e', -1, 1714018209, 1714018209, '12778b32', -10, 0, 0)

Line : 187
File : sessions.php