The default paths vary by version:
Copy the downloaded .IDX and .LIB files directly into the LIBRARY folder. Do not create subfolders—Proteus scans only the root of LIBRARY . Ssd1306 Oled Proteus Library Download
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); The default paths vary by version: Copy the downloaded