phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e784561755f7dbb30c713d26019897ac' 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 ('e784561755f7dbb30c713d26019897ac', -1, 1765836968, 1765836968, 'd849d868', 6, 0, 0)

Line : 187
File : sessions.php