Two parties with three dataset cannot fetch the result from FeldmanVerifiableSum.

[from-alice-to-bob]

Describe the bug
Hi,

My task involves two parties with three dataset, could be understood as:
host: bank_li
guest: insurance_li, trust_li

All of these dataset are under the same format as:
thd,asset
1,100
2,45.5
...

The first column thd is the ID and the second column asset is a float column for the later calculation. Here is a task to calculate the sum of asset for each user appears in both host and guest side. Before do the intersection, we should do the union for guest to get a dataset for all users in guest with their sum of asset. E.g.

provided:

insurance_li
thd,asset
1,100
4,150
7,200

trust_li
thd,asset
1,50
3,45
5,71
7,90

we should get a result as the union of guest as:
thd,asset
1,150
3,45
4,150
5,71
7,290

and then calculate the sum for the intersection between bank_li and this union data. E.g.

provided:

bank_li
thd,asset
1,1000
2,1200
3,800

we should get a result as:
thd,asset
1,1150
3,845

However, when I tried to implement this pipeline, I cannot get the 'data output' from FATEBoard on the guest side.

Can anyone help me to have a look? Thank you so much!

To Reproduce
My job_dsl.json and job_conf.json are shown below:
job_dsl.json:

{
"components": {
"feldman_verifiable_sum_0": {
"module": "FeldmanVerifiableSum",
"input": {
"data": {
"data": [
"intersect_0.data"
]
}
},
"output": {
"data": [
"result"
]
}
},
"reader_2": {
"output": {
"data": [
"data"
]
},
"provider": "fate_flow",
"module": "Reader"
},
"intersect_0": {
"output": {
"cache": [
"cache"
],
"data": [
"data"
]
},
"input": {
"data": {
"data": [
"union_0.data"
]
}
},
"provider": "fate",
"module": "Intersection"
},
"reader_1": {
"output": {
"data": [
"data"
]
},
"provider": "fate_flow",
"module": "Reader"
},
"union_0": {
"output": {
"data": [
"data"
]
},
"input": {
"data": {
"data": [
"reader_1.data",
"reader_2.data"
]
}
},
"provider": "fate",
"module": "UnionColumn"
}
}
}

job_conf.json:
{
"job_parameters": {
"common": {
"job_type": "train",
"pulsar_run": {},
"auto_retries": 0,
"computing_engine": "SPARK",
"task_parallelism": 1,
"rabbitmq_run": {},
"engines_address": {},
"computing_partitions": 3,
"federated_status_collect_type": "PUSH",
"inheritance_info": {},
"auto_retry_delay": 1,
"adaptation_parameters": {
"request_task_cores": 4,
"task_cores_per_node": 1,
"task_nodes": 3,
"if_initiator_baseline": true,
"task_memory_per_node": 0
},
"eggroll_run": {},
"spark_run": {},
"federated_mode": "MULTIPLE"
}
},
"component_parameters": {
"role": {
"host": {
"0": {
"reader_2": {
"table": {
"name": "bank_li",
"namespace": "experiment"
}
},
"reader_1": {
"table": {
"name": "bank_li",
"namespace": "experiment"
}
}
}
},
"guest": {
"0": {
"reader_2": {
"table": {
"name": "insurance_li",
"namespace": "experiment"
}
},
"reader_1": {
"table": {
"name": "trust_li",
"namespace": "experiment"
}
}
}
}
},
"common": {
"feldman_verifiable_sum_0": {
"q_n": 6,
"sum_cols": [
0
]
},
"intersect_0": {
"dh_params": {
"salt": "12345",
"hash_method": "sha256",
"key_length": 1024
},
"intersect_method": "dh",
"only_output_key": false,
"sync_intersect_ids": true
}
}
},
"dsl_version": 2,
"role": {
"host": [
7199
],
"guest": [
7188
]
},
"initiator": {
"role": "host",
"party_id": 7199
}
}

Expected behavior
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