phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4c5f8e2786492a52017dee86bdb791a2' 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 ('4c5f8e2786492a52017dee86bdb791a2', -1, 1764704494, 1764704494, 'd849d818', -4, 0, 0)

Line : 187
File : sessions.php