phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7a479b475242117f0109045e37b97d88' 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 ('7a479b475242117f0109045e37b97d88', -1, 1781576295, 1781576295, 'd849d8ae', 0, 0, 0)

Line : 187
File : sessions.php