phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4bfd2af9ee8523da9a3dcbd2f6ecfe97' 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 ('4bfd2af9ee8523da9a3dcbd2f6ecfe97', -1, 1767195435, 1767195435, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php