请求异常: HTTPSConnectionPool(host='generativelanguage.googleapis.com', port=443): Max retries exceeded with url: /v1beta/models/gemini-2.0-flash:generateContent?key=AIzaSyAvm2uWnuxkSyI_iLS1C5kr_P3VICT1sPs (Caused by SSLError(SSLEOFError(8, '[SSL: UNEXPECTED_EOF_WHILE_READING] EOF occurred in violation of protocol (_ssl.c:1000)')))