Connection error when importing BibTeX files

[esyriani]

When I import references, there is always a "404 Request Entity Too Large" or "413 Request Entity Too Large" message. I found out I can solve this by splitting the .bib into smaller files, but it is a bit annoying. For example, my current rapid review has 1235 references, and as the original 3,9 Mo file was too big, I have to cut it in more than 10 small files to avoid the error message. Is it normal?