phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0bbf75708a60e500bbd9cd21ac9a1591' 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 ('0bbf75708a60e500bbd9cd21ac9a1591', -1, 1770541717, 1770541717, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php