QUERY Editor Error Expression evaluation error at function a!queryLogicalExpression: invalid value for the "operator" parameter

I am adding another query filter for ri!employerId. The name of the field in the table is locindstryid. When I run a test query, I get the following error.

Error Expression evaluation error at function a!queryLogicalExpression [line 13]: The a!queryLogicalExpression function has an invalid value for the “operator” parameter. “operator” must not be null or empty.

Code:

with(
/* Query for vanpools in status A, P, R or Z with the matching employer ID and worksite ID */
/* If none found, return empty {}, else return the worksite ID */
local!data: a!queryEntity(
entity: cons!ENTITY_LOCATION_INDUSTRY_DET,
query: a!query(
selection: a!querySelection(
columns: {
a!queryColumn(field: "referenceId"),
a!queryColumn(field: "locIndstryId")
}
),
logicalexpression: a!queryLogicalExpression(
operator:"AND",
filters: {
a!queryFilter(
field: "referenceId",
operator: "=",
value: ri!worksiteId
),
a!queryFilter(
field:"locIndstryId",
operator:"=",
value: ri!employerId
)
},
ignoreFiltersWithEmptyValues: false
),
pagingInfo: a!pagingInfo(
startIndex: 1,
batchSize: -1
)
),
fetchTotalCount: true
).data,

if(count(local!data) > 1, {}, local!data[1].referenceId)

)