phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '744c6f792f803ad8c73c4f92b2c7f9fe' 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 ('744c6f792f803ad8c73c4f92b2c7f9fe', -1, 1784282234, 1784282234, 'd849d866', 17, 0, 0)

Line : 187
File : sessions.php