After call of lv_init() Serial.println() doesn't work

[Harry863]

I have migrate one project (Teensy 4.0) from Arduino IDE to PlatformIO.
I am able to compile it and it works perfectly but the Serial.print or printf("\n") don't work.

I found out that it happens after the call of lv_init()
Before this call Serial.println... works

Thank you in advance