Problem with Multiple Libraries on Arduino 1.8.13

[Idahowalker]

@nouriizein

In file included from C:\Users\Viola\Documents\Arduino\libraries\EMailSender/EMailSender.h:217:0,
from C:\Users\Viola\Downloads\2-email-capmoisturesensor\2-email-capmoisturesensor.ino:3:
C:\Users\Viola\Documents\ArduinoData\packages\esp8266\hardware\esp8266\2.4.2\libraries\SD\src/SD.h:26:7: error: redefinition of 'class fs::File'
class File : public Stream {

If you comment out the EmailSender code and do a test recompile does the error show up?