No, that's a different problem caused by malformed JSON from mesonet-map-json.php for the BNLWN network. It's missing some stuff at the end of the JSON file, so it results in a JavaScript error on the display and the date() error shown above.
It was caused by a bad entry at the end of the BNLWN-conditions.txt file
Netherlands Schoonebeek 118|,,,,,,,,,,,,,,1662046339,0.141
which was missing all the needed data.
I've updated the mesonet-map-json.php to V4.09 to reject that.. try the attached.
edit: added the script to the distribution of mesonet-map.zip so the mesonet-map-check-versions.php utility will also note the update.