Error populating query using the examples about aresdb HOT 1 OPEN

~/go/src/github.com/uber/aresdb/examples# ./examples query --dataset 1k_trips
making query total_fare ... 
{
	"results": [
		{
			"2020-08-12 05:00": 751.3237829208374,
			"2020-08-12 06:00": 687.8017654418945,
			"2020-08-12 07:00": 418.1892418861389,
			"2020-08-12 08:00": 917.4608173370361,
			"2020-08-12 09:00": 688.5783615112305,
			"2020-08-12 10:00": 782.9843788146973,
			"2020-08-12 11:00": 658.4099531173706,
			"2020-08-12 12:00": 643.7608612775803,
			"2020-08-12 13:00": 541.6034736633301,
			"2020-08-12 14:00": 494.9347426891327,
			"2020-08-12 15:00": 709.1005311012268,
			"2020-08-12 16:00": 643.4200687408447,
			"2020-08-12 17:00": 567.0114274024963,
			"2020-08-12 18:00": 956.4719915390015,
			"2020-08-12 19:00": 766.9693918228149,
			"2020-08-12 20:00": 1044.1855945587158,
			"2020-08-12 21:00": 631.0994410514832,
			"2020-08-12 22:00": 723.8907270431519,
			"2020-08-12 23:00": 839.2877159118652,
			"2020-08-13 00:00": 575.8491058349609,
			"2020-08-13 01:00": 963.8802764415741,
			"2020-08-13 02:00": 749.4545092582703,
			"2020-08-13 03:00": 816.7640795707703,
			"2020-08-13 04:00": 474.3639802932739
		}
	]
}
making query total_trips ... 
{
	"results": [
		{
			"2020-08-12 05:00": 16,
			"2020-08-12 06:00": 15,
			"2020-08-12 07:00": 7,
			"2020-08-12 08:00": 14,
			"2020-08-12 09:00": 9,
			"2020-08-12 10:00": 14,
			"2020-08-12 11:00": 12,
			"2020-08-12 12:00": 17,
			"2020-08-12 13:00": 10,
			"2020-08-12 14:00": 13,
			"2020-08-12 15:00": 12,
			"2020-08-12 16:00": 14,
			"2020-08-12 17:00": 13,
			"2020-08-12 18:00": 19,
			"2020-08-12 19:00": 16,
			"2020-08-12 20:00": 17,
			"2020-08-12 21:00": 12,
			"2020-08-12 22:00": 15,
			"2020-08-12 23:00": 16,
			"2020-08-13 00:00": 9,
			"2020-08-13 01:00": 18,
			"2020-08-13 02:00": 15,
			"2020-08-13 03:00": 15,
			"2020-08-13 04:00": 10
		}
	]
}
making query total_trips ... 
panic: query failed with status code 400

goroutine 1 [running]:
github.com/uber/aresdb/examples/utils.MakeQuery(0xc449c2, 0x9, 0x249e, 0xc000342c31, 0xb, 0xc000342c3c, 0x4, 0xc000032b20, 0x20, 0xc00042e2c0, ...)
	/root/go/src/github.com/uber/aresdb/examples/utils/example_utils.go:183 +0x715
main.queryDataSet()
	/root/go/src/github.com/uber/aresdb/examples/examples.go:37 +0x440
main.main.func3(0xc000361900, 0xc0003bd660, 0x0, 0x2)
	/root/go/src/github.com/uber/aresdb/examples/examples.go:114 +0x20
github.com/spf13/cobra.(*Command).execute(0xc000361900, 0xc0003bd600, 0x2, 0x2, 0xc000361900, 0xc0003bd600)
	/root/go/pkg/mod/github.com/spf13/[email protected]/command.go:830 +0x2cc
github.com/spf13/cobra.(*Command).ExecuteC(0xc000361180, 0x4, 0x2, 0xc000361900)
	/root/go/pkg/mod/github.com/spf13/[email protected]/command.go:914 +0x2f8
github.com/spf13/cobra.(*Command).Execute(0xc000361180, 0xc000141f70, 0x3)
	/root/go/pkg/mod/github.com/spf13/[email protected]/command.go:864 +0x2b
main.main()
	/root/go/src/github.com/uber/aresdb/examples/examples.go:119 +0x4a6

~/go/src/github.com/uber/aresdb/examples/1k_trips/queries# ls
total_fare.aql  total_trips.aql  total_trips.sql