Using include parameter with /ontologies/classes/:cls/mappings sometimes returns 404 status

Attempts to use the "include=prefLabel" parameter with the /mappings endpoint for classes sometimes returns a 404 status.

For example, this call succeeds with a 200 status:

https://data.bioontology.org/ontologies/HTN/classes/http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FVSO_0000020/mappings?include=prefLabel

... but this call fails with a 404 status:

https://data.bioontology.org/ontologies/HTN/classes/http%3A%2F%2Fpurl.obolibrary.org%2Fobo%2FBFO_0000001/mappings?display_links=false&display_context=false&include=all

{
-"errors": [
"The ontologies parameter `[HTN,ENVTHES,RETO,HHEAR,SIO,GEXO,ONS,REXO,GLYCOCOO,BIOMO,IOBC,SCO,HASCO,EPO,SITBAC,SENTI,BCGO,OGDI,OF,BOF,CTX,ONTOAD,GFO,GFO-BIO,OCRE,ADALAB-META,G-PROV,PROJ,REPRODUCE-ME,CHEAR,DCAT-FDC,GBOL,PGXO,PROVCARE,NIDM-RESULTS,TIM,MIAPA,PROV-ONE,PROVO,CHEMBIO,FHIR4,FHIR,FLU,HUPSON,CSEO,ADAR,AERO,NEOMARK4,CPRO,NEMO,PTSDO,ADO,CAO,PE-O,ECG,CANCO,SDO,BDO,HPIO,SPO,IDODEN,ACGT-MO,CNO,DDI,TEO,NPO,SP,PDRO,TOP-MENELAS,NCIT,NCICOPY,ICNP,ST1,HL7,BIRNLEX,NMR,TRAK,PMD,RT,OBOE,ECSO,OGG,ODNAE,VODAN,OBIWS,DPO,ICEO,GDCO,PP,AFO,RCIT_A1_TEST1,ECOCORE,LIFO,OMIT,DRON,VIVO-ISF,HSO,OBI_BCGO,RT123,TXPO,KTAO,UPHENO,IDO-COVID-19,CIDO,NGBO,OGMS,CARO,PCL,ORNASEQ,OPTION-ONTOLOGY,VFB_DRIVERS,IAO,RCIT_C1,MS,AF,PLANA,ELECTRICA,PECO,INBANCIDO,GSSO,PNADO,OHD,VEO,OBIB,OAE,ADALAB,NIO,EUPATH,CTO,DDIEM,CIDIT_V1,SWO,CVDO,XPO,IDOBRU,HOIP,CIDIT_V3,VO,NPHO,OOSTT,OGG-MM,CLO,TCDO,CIDIT_V4,VDOT,RBO,AGRO,EO,NLN,OGSF,OPMI,ECTO,OCMR,AFO_01,NCRO,ENVO,ENM,MHMO,INO,ONTODM-CORE,MF,OBCS,NMDCO,MFOEM,OPTION,OHMI,OPL,FYPO,PSDO,CIDIO_V1,ORCS,GEO218,ONTONEO,EPIO,OBI,RTEST-OBI,UBERON,IDO,ODAE,CIVIO_1,ACESO,CHEMINF,VIDO,APOLLO-SV,SEPIO,DUO,OCE,PCO,VIVO,ICO,OLAM,MCO,ICDO,FOODON,LABO,PATO,RICIT_VER_2,VSO,KORO,ROLEO,NPOKB,FIDEO,CIDIT_V2,AISM,COVIDCRFRAPID,VICO,RCIT_A1,CIDIO_AUX,MAXO,RICIT_V1,NIFDYS,ERO,CIDIT_V1_2,ZP,BFO,DIDEO,PLANTSO,OBA,OCVDAE,ONE,EGO,OBI_IEE,OMRSE,CORON,BCO,NIFSTD,PPO,PHIPO,GENO,CIDIT_V2_2,FOVT,PEAO,GEO,CRO,CIDIT_V3_2,VIO,ECAO,ONSTR,TXP,MFOMD,COVID-19,CL,TYPON,DELME1,OVAE,STATO,OGI,OHPI,OMIM,MEDDRA,WHO-ART,MSTDE,STY,AI-RHEUM,MESH,MSTDE-FRE,ICPC2P,SNMI,SNOMEDCT,CTU_ATC_2020,ICD9CM,ICD10PCS,RO,CRISP,ATC-U1061,ATC,NCBITAXON,RXNORM,PDQ,ROO,NDFRT,MDDB,NDDF,COSTART,ICD10CM,MEDLINEPLUS,VANDF,ICD10,LOINC,RCD,HCPCS,CPT,IDOMAL,MIRO,FALL,AURA,CCO,BIOLINK,BLM,RBSCI,BP,MIM,DIKB,CLAO,OBOE-SBC,SEP,DBPEDIA,SAO,ONTOPARON,PLIO,PSO]` includes non-existent acronyms. Notice that acronyms are case sensitive."
],
"status": 404
}

ncbo / ontologies_api

Using include parameter with /ontologies/classes/:cls/mappings sometimes returns 404 status #83