504 server response for flights by aircraft endpoi

hello dear community members

and first of all a big thank you to those who are making this all happen!!

i have a problem when calling this endpoint
e.g.: opensky-network.org/api/flights/aircraft...50727&end=1613042727

i get a 504 gateway timeout from nginx as "response"

EDIT: shortly after the post, it started to work. it hasnt been working for me since yesterday though. i dont know if someone already did sth or its just coincidence. do i have to take the failing of the endpoint into account when planning the presentation?

i am new to programming and currently working on my final project for the "school" i am attending.
it's a flight tracker (quelle surprise) and the presentations are thursday.

has anybody an idea what the issue might be?
thanks for reading and for all of your effort, cheers!

armin