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) VALUES ('cb0fe01c016f3e8a2715c21fae45eefc', -1, 1714723900, 1714723900, '12dfc4d3', 1, 0)

Line : 158
File : sessions.php