phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5618f1830f68b1835dda23c7c49e8064' 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 ('5618f1830f68b1835dda23c7c49e8064', -1, 1771190530, 1771190530, 'd849d800', -4, 0, 0)

Line : 187
File : sessions.php