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 ('5ec9bc3c0fe2c2c5c6e62ea22dea772e', -1, 1713554394, 1713554394, '12df20e6', -9, 0, 0)

Line : 187
File : sessions.php