phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '53d163e7474aa3b5db3cc27edffb35e3' 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 ('53d163e7474aa3b5db3cc27edffb35e3', -1, 1770041717, 1770041717, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php