phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '71d6a441fbe98803ed80c72ef4bb0275' 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 ('71d6a441fbe98803ed80c72ef4bb0275', -1, 1768577099, 1768577099, 'd849d834', -4, 0, 0)

Line : 187
File : sessions.php