API disconnection: ignore, add a warning and finish the flow without errors
Sometimes de PubMed API is dysfunctional with the message: gargantext-server: panic! (the 'impossible' happened) (GHC version 8.10.7: [getPage] error: "FailureResponse (Request {requestPath = (BaseUrl {baseUrlScheme = Https, baseUrlHost = "eutils.ncbi.nlm.nih.gov", baseUrlPort = 443, baseUrlPath = "entrez/eutils"},"/efetch.fcgi"), requestQueryString = fromList [("db",Just "pubmed"),
Then if such error happends, make a warning to the user: "Currently the connection to the API is down. Relaunch your query later please."