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|2022-03-28|
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 =>/var/www/vhosts/1epal-psachn.eyv.sch.gr/httpdocs/pwsWD/_my_settings/settings.php
PWS_settings.php (176) $defaultlanguage=el-gr $used_lang =el-gr $locale_wu=el-GR $lang_locale=el $lang_file=languages/lang_gr.txt
PWS_settings.php (284) $units_used =metric $windunit=km/h $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 =1
PWS_livedata.php (845) error livedata /var/www/vhosts/1epal-psachn.eyv.sch.gr/httpdocs/pwsWD/jsondata/wucom.txt not a correct wu file
PWS_graph_xx.php (166) loading  =>./chartswudata/IPSACH6YMD.txt
PWS_graph_xx.php (193)Line-names contains {"success":false,"error":"Data could not be loaded from WU
437