Set PlatformIO's lib_ldf_mode to chain+ to prevent it from including ESP32 libraries in ESP8266 projects and vice versa.

platformio.ini

@@ -11,6 +11,7 @@
 [platformio]
 lib_dir = lib
 env_default = ota
+lib_ldf_mode = chain+
 
 
 [extra]
@@ -28,6 +29,7 @@ platform = espressif8266
 board = esp07
 framework = arduino
 lib_deps = ${extra.lib_deps}
+lib_ldf_mode = chain+
 
 [env:local]
 upload_port = /dev/cu.wchusbserial1420
@@ -35,6 +37,7 @@ platform = espressif8266
 board = esp07
 framework = arduino
 lib_deps = ${extra.lib_deps}
+lib_ldf_mode = chain+
 
 [env:esp32]
 platform = espressif32
@@ -43,4 +46,5 @@ framework = arduino
 lib_deps =
 	${extra.lib_deps}
 	ESP32WebServer
-	WiFiClient
+	FS
+lib_ldf_mode = chain+