Whether or not this is equivalent will depend on markers_visitors and markers_temp, which as Kristoffer says isn’t available to us - can you produce an MWE that enables us to reproduce the error? If you can’t share the data you might want to consider generating some random data that matches your DataFrame in terms of the column types (as I did above).
Your initial post shows that your columns are of type Any, so there might be some stray non-numerical entries in your DataFrame?