phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ab1bb7c37ee22bf9331c675431f23765' 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 ('ab1bb7c37ee22bf9331c675431f23765', -1, 1766470803, 1766470803, 'd849d819', 32, 0, 0)

Line : 187
File : sessions.php