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 ('d0a4c51aa6dd2c3152c9c7c4d31a7e2a', -1, 1713484344, 1713484344, '0385a09c', -10, 0, 0)

Line : 187
File : sessions.php