phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : -1 ERROR: duplicate key value violates unique constraint "phpbb_session_pkey" DETAIL: Key (session_id)=(e776410b01c3429b54e2349b4867245f) already exists.

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e776410b01c3429b54e2349b4867245f', -1, 1571281676, 1571281676, '12d21684', -1, 0, 0)

Line : 187
File : sessions.php