VSCode Platformio Schedule.h: No such file or directory
Did you install the libraries you need / use?

You could do it either via the platformio screen or add the names directly to the 
platformio.ini

lib_deps =
    Firebase ESP8266 Client@&gt;=2.7.8


And additionally ESP8266WiFi.h is an ESP8266 library
for the ESP32 you should use the lib #include &lt;WiFi.h&gt;

EDIT: To update the project libraries, select 'Update Project Libraries' from the project tasks.