The following tool has been running without problem for years: https://tools.wmflabs.org/citation-template-filling/cgi-bin/index.cgi <https://tools.wmflabs.org/citation-template-filling/cgi-bin/index.cgi> Recently the tool has started generating the following error message: Can't call method "findnodes" on an undefined value at /data/project/citation-template-filling/perl/ActivePerl-5.26/site/lib/WWW/Search/PubMedLite.pm line 117. PubMedLite.pm in turn makes a request to “'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi <https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi>” for data. For debugging, I queried the entrez server using an equivalent command in curl which generated the following error messages: curl 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=12345&retmode=xml <https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=12345&retmode=xml>' curl: (6) Could not resolve host: eutils.ncbi.nlm.nih.gov <http://eutils.ncbi.nlm.nih.gov/> I also tried replacing “eutils.ncbi.nlm.nih.gov <http://eutils.ncbi.nlm.nih.gov/>” with its IP address: curl 'https://130.14.29.110/entrez/eutils/efetch.fcgi?db=pubmed&id=12345 <https://130.14.29.110/entrez/eutils/efetch.fcgi?db=pubmed&id=12345>' curl: (51) SSL: no alternative certificate subject name matches target host name '130.14.29.110' The same curl command runs without problem on my local workstation: curl 'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=12345&retmode=xml <https://eutils.ncbi.nlm.nih.gov/entrez/eutils/efetch.fcgi?db=pubmed&id=12345&retmode=xml>’ <!DOCTYPE PubmedArticleSet PUBLIC "-//NLM//DTD PubMedArticle, 1st January 2019//EN" "https://dtd.nlm.nih.gov/ncbi/pubmed/out/pubmed_190101.dtd <https://dtd.nlm.nih.gov/ncbi/pubmed/out/pubmed_190101.dtd>"> … Anyone have an idea how to fix this? Thanks, Boghog