phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '39997e2ac586b7c328fccc5afddf0f39' 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 ('39997e2ac586b7c328fccc5afddf0f39', -1, 1762144463, 1762144463, 'd849d887', 3, 0, 0)

Line : 187
File : sessions.php