phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e9fd5c78cc4208d2db239507e9c3d279' 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 ('e9fd5c78cc4208d2db239507e9c3d279', -1, 1769608212, 1769608212, 'd849d8d0', -4, 0, 0)

Line : 187
File : sessions.php