phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '957c8e6d859d7d0e5f994dda8c42dc55' 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 ('957c8e6d859d7d0e5f994dda8c42dc55', -1, 1793198009, 1793198009, 'd849d8f6', -4, 0, 0)

Line : 187
File : sessions.php