Đã xảy ra lỗi khi tải sổ tay này. Hãy đảm bảo rằng tệp này có thể truy cập được rồi thử lại.

Unexpected token '<', "<!DOCTYPE "... is not valid JSON

Unexpected token '<', "<!DOCTYPE "... is not valid JSON
SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
    at JSON.parse (<anonymous>)
    at xa.program_ (https://ssl.gstatic.com/colaboratory-static/common/ccf2fd1042ec08c1735590e3895c78f8/external_binary_l10n__vi.js:2656:128)
    at za (https://ssl.gstatic.com/colaboratory-static/common/ccf2fd1042ec08c1735590e3895c78f8/external_binary_l10n__vi.js:17:57)
    at xa.next_ (https://ssl.gstatic.com/colaboratory-static/common/ccf2fd1042ec08c1735590e3895c78f8/external_binary_l10n__vi.js:15:195)
    at kaa.next (https://ssl.gstatic.com/colaboratory-static/common/ccf2fd1042ec08c1735590e3895c78f8/external_binary_l10n__vi.js:18:48)
    at b (https://ssl.gstatic.com/colaboratory-static/common/ccf2fd1042ec08c1735590e3895c78f8/external_binary_l10n__vi.js:18:309)
 OK