Hello everybody,

I am having problems with the RISmed R package. I used code bellow a week ago and everything worked perfectly: library(RISmed) search_query <- EUtilsSummary(search_topic, retmax=1000, mindate=2019,maxdate=2021) summary(search_query) QueryId(search_query) records<- EUtilsGet(search_query) class(records) pubmed_data <- data.frame('Title'=ArticleTitle(records),'Abstract'=AbstractText(records), 'PMID'=PMID(records), 'Year'=YearPubmed(records)) head(pubmed_data,1) str(pubmed_data) write.table(pubmed_data, file = "pubmed.tsv", sep = '\t') Todaj I got this error message: > search_query <- EUtilsSummary(search_topic, retmax=1000, mindate=2019,maxdate=2021) Error in file(con, "r") : cannot open the connection In addition: Warning message: In file(con, "r") : cannot open URL 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=pubmed&term=Preterm+delivery[TI]+AND+metabolomics[AB]&retmax=1000&mindate=2019&maxdate=2021&tool=RISmed&email=s.a.kovalchik@gmail.com': HTTP status was '500 Internal Server Error Is it something wrong with Pubmed? Thanks, Leon