No visit for that origin (according to the mirror swh db, one reads from the api):
softwareheritage=> select * from origin_visit where origin=34927854;
 origin | visit | date | status | metadata
--------+-------+------+--------+----------
(0 rows)

Checking the scheduler, no entry for that origin is referenced:

softwareheritage-scheduler=> select * from task where arguments#>>'{args,0}'='https://github.com/openpreserver/jhove';
 id | type | arguments | next_run | current_interval | status
----+------+-----------+----------+------------------+--------
(0 rows)

To demo the query works, using another origin i know exist, i have a clean result:

softwareheritage-scheduler=> select * from task where arguments#>>'{args,0}'='https://github.com/kubikrubit/pr1';
    id    |       type        |                           arguments                           |           next_run       | current_interval |         status
----------+-------------------+---------------------------------------------------------------+-------------------------------+------------------+------------------------
 54311451 | origin-update-git | {"args": ["https://github.com/kubikrubit/pr1"], "kwargs": {}} | 2017-05-21 12:18:32.610474+00 | 32 days          | next_run_not_scheduled
(1 row)