phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8c73be5d4656f6a0194e462f056b2577' 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 ('8c73be5d4656f6a0194e462f056b2577', -1, 1776306548, 1776306548, 'd849d833', -4, 0, 0)

Line : 187
File : sessions.php