phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '75a0e20bd3a457a7121c01c2c03ff5b3' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('75a0e20bd3a457a7121c01c2c03ff5b3', -1, 1419137153, 1419137153, '36504598', -1, 0, 0)

Line : 187
File : sessions.php