How to connect to postgresql 10+ database with pgAdmin 3?

I know that pgAdmin3 is now obsolete, but I still perfer it to pgAdmin4.
It was working fine up to PostgreSQL 9.* version, but when I try to connect to PostgreSQL 10 database I get:

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Is there any workaround for this, or is this truly the end of pgAdmin III?

Is PostgreSQL 10 backwards compatible?

Version 10 has a number of backwards-incompatible changes which may affect system administration, particularly around monitoring and backup automation. As usual, PostgreSQL users should carefully test for the incompatibilities before upgrading in production.

The official pgAdmin3 has issues with PgSQL 10 and is no longer being developed, but there is a fork available at https://www.openscg.com/bigsql/pgadmin3/ which does work, and will continue to receive updates.