phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dec5ef1b913033fe2a465c557390d8c4' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('dec5ef1b913033fe2a465c557390d8c4', -1, 1785190769, 1785190769, 'd849d987', 1, 0, 0)

Line : 187
File : sessions.php