No valid data file found, script ends

PWS_graph_xx.php(33) loaded  =>PWS_graph_xx.php|01|2021-05-15|
PWS_graph_xx.php (37) include_once  =>./PWS_livedata.php
PWS_livedata.php (22) version =>PWS_livedata.php|01|2023-02-23|
PWS_livedata.php (25) include_once =>PWS_settings.php
PWS_settings.php (28) version =>PWS_settings.php|01|2022-12-23|
PWS_settings.php (32) include =>/home/sites/site100022237/web/bittkau-md.de/startwetter/wetter_ottersleben/Saratoga/Base-World/pwsWD/_my_settings/settings.php
PWS_settings.php (176) $defaultlanguage=de-dl $used_lang =sr-rs $locale_wu=sr-RS $lang_locale=sr $lang_file=languages/lang_sr.txt
PWS_settings.php (284) $units_used =scandinavia $windunit=m/s $tempunit=C $rainunit=mm $pressureunit=hPa $distanceunit=km $wu_unit=m
PWS_livedata.php (29) include_once =>PWS_shared.php
PWS_shared.php (21) version =>PWS_shared.php|01|2022-11-22|
PWS_livedata.php (39) $itsday =
PWS_graph_xx.php (76) type set to temp from request temp
PWS_graph_xx.php (166) loading  =>./chartswudata/ISACHSEN310YMD.txt
PWS_graph_xx.php (193)Line-names contains {"success":false,"error":"Data could not be loaded from WU
436