phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '61835271b5a2aa1d7044b223a10e5280' 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 ('61835271b5a2aa1d7044b223a10e5280', -1, 1531793587, 1531793587, '36c668ca', 2, 0, 0)

Line : 187
File : sessions.php