phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '57a423bcadfd7f77f722fdee6ed1f15a' 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 ('57a423bcadfd7f77f722fdee6ed1f15a', -1, 1769256410, 1769256410, 'd849d887', -9, 0, 0)

Line : 187
File : sessions.php