phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1e4f115678b8548285c5b57725c021b9' 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 ('1e4f115678b8548285c5b57725c021b9', -1, 1540130760, 1540130760, '36e0f72a', 1, 0, 0)

Line : 187
File : sessions.php