Manche suchen nach FQDN verursachen HTTP 400, aber Fehlermeldung wird nicht angezeigt

Wenn man zum Beispiel nach der (nichtexistenten) Domain ... sucht, gibt der execute-Endpoint Fehler 400 zurück mit content:

{
	"exception": {
		"error": {
			"code": 1,
			"description": "[cntl] Ungültige Eingabesyntax für entsprechenden Datentyp",
			"details": null
		},
		"error_type": {
			"code": -20900,
			"name": "format_error",
			"description": "Datentyp-Formatierungsfehler"
		},
		"constraint": {
			"name": null,
			"description": null
		},
		"stacked_diag_params": {
			"sqlstate": "23514",
			"message": "value for domain strng.short_uc_kw_type violates check constraint \"chk_short_uc_kw_type_len\"",
			"detail": "",
			"hint": "",
			"context": "PL/pgSQL function eh.set_err(eh.stacked_diag_params_rec_type,name,name,eh.userparams_kv_rec_type[],eh.typecode_rec_type) line 8 at RAISE\\nSQL statement \"SELECT eh.set_err(sd_rec, fpkg, fname, up_kv_rec_list, et_rec)\"\\nPL/pgSQL function wapi_3_2.insert_ta_stmt_value(record,wapi_3_2.ta_stmt,text,text,jsonb,bigint,text,boolean,boolean,text,jsonb,bigint,text,boolean,boolean,boolean,text) line 228 at PERFORM\\nSQL statement \"SELECT wapi_3_2.insert_ta_stmt_value(\\n          in_cvsn_rec => cvsn_rec,\\n          in_stmt_rec => wapi_ta_stmt_rec,\\n          in_stmt_param_name => param_rec_jsonb ->> 'name',\\n          --\\n          in_stmt_old_value => param_rec_jsonb ->> 'old_value',\\n          in_stmt_old_value_jsonb => param_rec_jsonb -> 'old_value',\\n          in_stmt_old_r_pos => (stmt_idx2pos_dict -> old_ref_stmt_idx)::integer,\\n\\n          in_stmt_old_r_param => param_rec_jsonb ->> 'old_ref_stmt_param',\\n          -- default: false (falls nicht angegeben)\\n          in_stmt_old_r_allow_no_data => param_rec_jsonb ? 'old_ref_allow_no_data' and (param_rec_jsonb ->> 'old_ref_allow_no_data')::boolean,\\n          in_stmt_old_exists => old_exists,\\n          --\\n          in_stmt_new_value => param_rec_jsonb ->> 'new_value',\\n          in_stmt_new_value_jsonb => param_rec_jsonb -> 'new_value',\\n          in_stmt_new_r_pos => (stmt_idx2pos_dict -> new_ref_stmt_idx)::integer,\\n\\n          in_stmt_new_r_param => param_rec_jsonb ->> 'new_ref_stmt_param',\\n          -- default: false (falls nicht angegeben)\\n          in_stmt_new_r_allow_no_data => param_rec_jsonb ? 'new_ref_allow_no_data' and (param_rec_jsonb ->> 'new_ref_allow_no_data')::boolean,\\n          in_stmt_new_exists => new_exists,\\n          --\\n          in_conv_text2json => do_text2json,\\n          in_src_fmt => in_src_fmt\\n        )\"\\nPL/pgSQL function wapi_3_2.insert_ta_stmt_list(bigint,wapi_3_2.imp_ta_stmt_rec_type[],text,text) line 128 at PERFORM\\nSQL statement \"SELECT wapi_3_2.insert_ta_stmt_list(\\n    in_ta_id => ta_id,\\n    in_stmt_list => stmt_list,\\n    in_http_rq_mthd => in_http_rq_mthd\\n  )\"\\nPL/pgSQL function wapi_3_2.ta_handler(text,text,text,boolean,boolean,boolean,boolean,text) line 22 at PERFORM",
			"dml_src_table": null,
			"schema": "strng",
			"table": "",
			"column": "",
			"datatype": "short_uc_kw_type",
			"constraint": "chk_short_uc_kw_type_len"
		},
		"others": {},
		"traceback": [
			{
				"function": "cntl.conv_daty_s2db",
				"param": {
					"org.unit.short_name": "USCJERUSALEM.USC.UNI-KARLSRUHE.DE",
					"cntl.data_type.name": "text_kw_uc_short"
				}
			},
			{
				"function": "wapi_3_2.insert_ta_stmt_value",
				"param": {
					"wapi.transaction_stmt_param.name": "short_name",
					"wapi.transaction_stmt_param.old_value": "USCJERUSALEM.USC.UNI-KARLSRUHE.DE",
					"wapi.transaction_stmt_param.new_value": null
				}
			},
			{
				"function": "wapi_3_2.insert_ta_stmt_list",
				"param": {
					"wapi.transaction_stmt.pos": 6,
					"wapi.transaction_stmt.idx": "6"
				}
			}
		]
	}
}

Die Fehlermeldung wird vom Frontend aber nicht mit dem Poostorm-Fehler angezeigt. Es lädt einfach forever.

Habe leider keinen anderen FQDN gefunden, die das Problem auslöst.