Unable to open Domains or Subscriptions page in Plesk: Declaration of PleskDocker: void must be compatible with

Symptoms

Unable to open Domains or Subscriptions page with the error below:

SyntaxError: Unexpected token '<', "<script></"... is not valid JSON
And the plesk logs:
ERROR: Declaration of PleskDockerHttpMessageEncodingFilteredStream::seek(int $offset, int $whence = SEEK_SET): void must be compatible with PsrHttpMessageStreamInterface::seek($offset, $whence = PsrHttpMessageSEEK_SET) (FilteredStream.php:150)

Cause

Docker extension bug with ID EXTDOCKER-175.

Resolution

Until the bug is fixed, disable Docker extension.