phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c8b72deffc133eca8ef309d8533a42db' 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 ('c8b72deffc133eca8ef309d8533a42db', -1, 1791136398, 1791136398, 'd849d97e', 1, 0, 0)

Line : 187
File : sessions.php