phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c7b4739d83c22e008720302b4dc5500e' 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 ('c7b4739d83c22e008720302b4dc5500e', -1, 1542158027, 1542158027, '36524f89', 1, 0, 0)

Line : 187
File : sessions.php