phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '957510712dd2219b6c2ca6638b2dc5e8' 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 ('957510712dd2219b6c2ca6638b2dc5e8', -1, 1767359393, 1767359393, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php