phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd1e4fc3c2d2861794aabc6b38c97ca79' 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 ('d1e4fc3c2d2861794aabc6b38c97ca79', -1, 1770987435, 1770987435, 'd849d809', -4, 0, 0)

Line : 187
File : sessions.php