phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f134c45f5055f0240fd81ea876fb263d' for key 1

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f134c45f5055f0240fd81ea876fb263d', -1, 1498634390, 1498634390, '36505992', 17, 0, 0)

Line : 187
File : sessions.php