Job list page error if there is not jobs

[superstar54]

Describe the bug
In a fresh container, without jobs.

AiiDAlab QuantumESPRESSO App

KeyError Traceback (most recent call last)
/tmp/ipykernel_5654/1471599892.py in <cell line: 3>()
1 from aiidalab_qe.app.utils.search_jobs import QueryInterface
2
----> 3 qi = QueryInterface()
4 qi.filters_layout

~/.local/lib/python3.9/site-packages/aiidalab_qe/app/utils/search_jobs.py in init(self)
8 class QueryInterface:
9 def init(self):
---> 10 self.df = self.load_data()
11 self.table = ipw.HTML()
12 self.setup_widgets()

~/.local/lib/python3.9/site-packages/aiidalab_qe/app/utils/search_jobs.py in load_data(self)
46 f"""Inspect"""
47 )
---> 48 return df[
49 [
50 "PK",

~/.local/lib/python3.9/site-packages/pandas/core/frame.py in getitem(self, key)
4106 if is_iterator(key):
4107 key = list(key)
-> 4108 indexer = self.columns._get_indexer_strict(key, "columns")[1]
4109
4110 # take() does not accept boolean indexers

~/.local/lib/python3.9/site-packages/pandas/core/indexes/base.py in _get_indexer_strict(self, key, axis_name)
6198 keyarr, indexer, new_indexer = self._reindex_non_unique(keyarr)
6199
-> 6200 self._raise_if_missing(keyarr, indexer, axis_name)
6201
6202 keyarr = self.take(indexer)

~/.local/lib/python3.9/site-packages/pandas/core/indexes/base.py in _raise_if_missing(self, key, indexer, axis_name)
6250
6251 not_found = list(ensure_index(key)[missing_mask.nonzero()[0]].unique())
-> 6252 raise KeyError(f"{not_found} not in index")
6253
6254 @overload

KeyError: "['Creation time', 'Delete', 'Inspect'] not in index"