phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '20a7e0738767164cf06d0feea2b33c30' 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 ('20a7e0738767164cf06d0feea2b33c30', -1, 1775481770, 1775481770, 'd849d873', 7, 0, 0)

Line : 187
File : sessions.php