Its is returning a datevalue. Here is the code to replicate error:
"""
import pandas as pd
import numpy as np
import lseg.data as ek
ek.open_session()
Fields= ['TR.FundYeartoYesterday']
Fundamentals= ek.get_data('LP68102841', Fields)
ek.close_session()
"""
This is being replicated across all other instruments.
Other fields are working as normal.