phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'de9bd31cbf53f89c7943660fc4b5cbac' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('de9bd31cbf53f89c7943660fc4b5cbac', -1, 1762387559, 1762387559, 'c31412cc', 4, 0, 0)

Line : 187
File : sessions.php