api v3 - worked code gives 403 Insufficient Permission

Hello, 

i was able to add posts 2 days ego,
today its not working

response:

(
[error] => Array
(
[errors] => Array
(
[0] => Array
(
[domain] => global
[reason] => insufficientPermissions
[message] => Insufficient Permission
)

)

[code] => 403
[message] => Insufficient Permission
)

)

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