phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0b961ea5c6dd0f92fab5dfa93f736351' 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 ('0b961ea5c6dd0f92fab5dfa93f736351', -1, 1503025003, 1503025003, '36c44a99', 14, 0, 0)

Line : 187
File : sessions.php