403 Forbidden - When upgrading to 2.3.6

[NHUN]

Hi Guys!
I stuck at upgrading to 2.3.6 from 2.2.17 ... it say "403 Forbidden". The prevous updates worked great. I can still reach the control panel but cant update. Any ide hot wo solve this?





Thanks in advance!
403 Forbidden - When upgrading to 2.3.6

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