phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '36815bdb9517f133b5684976314e29d8' 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 ('36815bdb9517f133b5684976314e29d8', -1, 1529487350, 1529487350, '36a2a59e', 4, 0, 0)

Line : 187
File : sessions.php