phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4d3c27aeaab27cf1f9b6f18bdb3eda02' 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 ('4d3c27aeaab27cf1f9b6f18bdb3eda02', -1, 1550481947, 1550481947, '36e217a0', -1, 0, 0)

Line : 187
File : sessions.php