phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5d865c9234f4faf762e586bf4aa1e278' 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 ('5d865c9234f4faf762e586bf4aa1e278', -1, 1771128946, 1771128946, 'd849d800', -4, 0, 0)

Line : 187
File : sessions.php