phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '259a8f56123c1ad7a64fd2ef3661871b' 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 ('259a8f56123c1ad7a64fd2ef3661871b', -1, 1764900226, 1764900226, '12610e53', -11, 0, 0)

Line : 187
File : sessions.php