COCI SPARQL is down

[VladimirAlexiev]

@essepuntato , @ivanhb

I'm trying this query:

PREFIX cito: <http://purl.org/spar/cito/>
SELECT * {
 ?s a cito:Citation ; ?p ?o
} LIMIT 100

• https://opencitations.net/index/sparql: Unable to get response from endpoint
• https://opencitations.net/poci/sparql: ok

[VladimirAlexiev]

On https://opencitations.net/poci/sparql:

• this gives Unable to get response from endpoint: shouldn't it be a syntax error?

  PREFIX cito: <http://purl.org/spar/cito/>
  #PREFIX fabio: <http://purl.org/spar/fabio/>
  SELECT * {
  ?s a fabio:Expression ; ?p ?o
  } LIMIT 100

• prefixes are not autocompleted, although https://prefix.cc/fabio.sparql exists
• if I uncomment the fabio prefix, I get zero results