phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2b55a986c23e7008c36452f38e2b1e68' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2b55a986c23e7008c36452f38e2b1e68', -1, 1563214576, 1563214576, '23abb7a3', 0, 0, 0)

Line : 187
File : sessions.php