Added eval block and error message to fetching of regulatory features, in case the underlying file is missing
Added eval block and error message to fetching of regulatory features, in case the underlying file is missing

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode