phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c78639a840237e0c9b8807f9c30584be' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c78639a840237e0c9b8807f9c30584be', -1, 1715081184, 1715081184, 'c0a80201', 18, 0, 0)

Line : 187
File : sessions.php