countries URIs are not well-formed

[gatemezing]

There are 4 countries URIs in the IM graph that are not well-formed.
To check those, go to this query here https://api.triplydb.com/s/nmkMUdjoA

PREFIX era: <http://data.europa.eu/949/>

SELECT distinct ?code ?country 
from <http://data.europa.eu/949/graph/im>
where 
{ ?x era:imCode ?code ;
     era:inCountry ?country
  filter (!regex(str(?country), "(autority|country)"))
} ```