500 error on /query endpoint

[maximusunc]

I'm getting a 500 error from the following GET request: https://smart-api.info/api/query?q=TRAPI%20KP. This query used to work but has recently stopped working.

Here is the error that is returned:
{"code":500,"success":false,"error":"search_phase_execution_exception","root_cuase_line_00":"Query contains too many nested clauses; maxClauseCount is set to 1024","debug":{"error":{"root_cause":[{"type":"too_many_nested_clauses","reason":"Query contains too many nested clauses; maxClauseCount is set to 1024"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"smartapi_docs","node":"lpmpQYOsQVSFYPa-3_aCsw","reason":{"type":"too_many_nested_clauses","reason":"Query contains too many nested clauses; maxClauseCount is set to 1024"}}],"caused_by":{"type":"too_many_nested_clauses","reason":"Query contains too many nested clauses; maxClauseCount is set to 1024","caused_by":{"type":"too_many_nested_clauses","reason":"Query contains too many nested clauses; maxClauseCount is set to 1024"}}},"status":500}}

[maximusunc]

I think this is related, but not necessarily a bug, but the /query endpoint used to return an _id unique field for each returned "hit" as well but no longer does.