phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '628bedadd58b25183040a2f11ed08ce7' 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 ('628bedadd58b25183040a2f11ed08ce7', -1, 1527222962, 1527222962, '36e06c55', 0, 0, 0)

Line : 187
File : sessions.php