phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8aa0f3a69e7020d2361f416a1cdc8898' 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 ('8aa0f3a69e7020d2361f416a1cdc8898', -1, 1767205982, 1767205982, 'd849d803', 18, 0, 0)

Line : 187
File : sessions.php