protect screen specific code with #if HAS_SCREEN

src/modules/esp32/PaxcounterModule.cpp

@@ -87,6 +87,8 @@ int32_t PaxcounterModule::runOnce()
     }
 }
 
+#if HAS_SCREEN
+
 // TODO / FIXME: This code is copied from src/graphics/Screen.cpp
 //               It appears (in slightly variants) also in other modules like
 //               src/modules/Telemetry/PowerTelemetry.cpp, src/modules/Telemetry/EnvironmentTelemetry.cpp
@@ -127,5 +129,6 @@ void PaxcounterModule::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state
                          buffer, "WiFi: %d\nBLE: %d\nuptime: %ds",
                          count_from_libpax.wifi_count, count_from_libpax.ble_count, millis() / 1000);
 }
+#endif  // HAS_SCREEN
 
 #endif

src/modules/esp32/PaxcounterModule.h

@@ -25,8 +25,10 @@ class PaxcounterModule : private concurrency::OSThread, public ProtobufModule<me
     virtual meshtastic_MeshPacket *allocReply() override;
     bool isActive() { return moduleConfig.paxcounter.enabled &&
                                !config.bluetooth.enabled && !config.network.wifi_enabled; }
+#if HAS_SCREEN
     virtual bool wantUIFrame() override { return isActive(); }
     virtual void drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y) override;
+#endif
 };
 
 extern PaxcounterModule *paxcounterModule;