phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8ea57b214dfdeb32c4eafdfb67fc50a9' 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 ('8ea57b214dfdeb32c4eafdfb67fc50a9', -1, 1490235719, 1490235719, '369e5075', 5, 0, 0)

Line : 187
File : sessions.php