phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2de1684b41de5f195914c88b48a4ed51' 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 ('2de1684b41de5f195914c88b48a4ed51', -1, 1770361154, 1770361154, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php