Online PHP editor | output for FVKlU

Output for 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught DateMalformedStringException: DateTime::modify(): Failed to parse time string (fifteenth day of this month) at position 0 (f): The timezone could not be found in the database in /in/FVKlU:5 Stack trace: #0 /in/FVKlU(5): DateTime->modify('fifteenth day o...') #1 {main} thrown in /in/FVKlU on line 5
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught DateMalformedStringException: DateTime::modify(): Failed to parse time string (fifteenth day of this month) at position 0 (f): The timezone could not be found in the database in /in/FVKlU:5 Stack trace: #0 /in/FVKlU(5): DateTime->modify('fifteenth day o...') #1 {main} thrown in /in/FVKlU on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18: Warning: DateTime::modify(): Failed to parse time string (fifteenth day of this month) at position 0 (f): The timezone could not be found in the database in /in/FVKlU on line 5 DateTime Object ( [date] => 2017-01-19 00:00:00.000000 [timezone_type] => 3 [timezone] => Europe/Amsterdam )
Output for 7.3.32 - 7.3.33, 8.0.13: Warning: DateTime::modify(): Failed to parse time string (fifteenth day of this month) at position 0 (f): The timezone could not be found in the database in /in/FVKlU on line 5 DateTime Object ( [date] => 2017-01-19 00:00:00.000000 [timezone_type] => 3 [timezone] => UTC )