phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3c3159bf1ebe78351930aed869624982' 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 ('3c3159bf1ebe78351930aed869624982', -1, 1540156706, 1540156706, '36c60f14', -2, 0, 0)

Line : 187
File : sessions.php