phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '715881eff555199c89c5a736954c08b9' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('715881eff555199c89c5a736954c08b9', -1, 1770061063, 1770061063, 'd849d88a', 0, 0)

Line : 152
File : /home/bsc/v1/phpbb2/includes/sessions.php