phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e9d1e8a8d4715f2c6a66a9e210cfc063' 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 ('e9d1e8a8d4715f2c6a66a9e210cfc063', -1, 1770882926, 1770882926, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php