phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '62cc5c593d9f9f3a7ea4ae6a0f3e858b' 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 ('62cc5c593d9f9f3a7ea4ae6a0f3e858b', -1, 1513538920, 1513538920, '36eaf776', 4, 0, 0)

Line : 187
File : sessions.php