Error on starting pgadmin3 [closed]

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When starting pgadmin3 I get the following error messages. This is the log file placed in my documents folder after starting:

2018-06-04 13:30:26 ERROR :
ERROR: function pg_last_xlog_receive_location() does not exist

LINE 1: ...E NULL END as inrecovery, CASE WHEN usesuper THEN
pg_last_xl...
^ HINT: No function matches the given name and argument types. You might need to add explicit type casts. 2018-06-04 13:30:34
ERROR : Column not found in pgSet: usecreatedb 2018-06-04 13:30:36
ERROR : Column not found in pgSet: usesuper 2018-06-04 13:30:37
ERROR : Column not found in pgSet: upsince 2018-06-04 13:30:37
ERROR : Column not found in pgSet: confloadedsince 2018-06-04 13:30:37
ERROR : Column not found in pgSet: inrecovery 2018-06-04 13:30:38
ERROR : Column not found in pgSet: replayloc 2018-06-04 13:30:39
ERROR : Column not found in pgSet: receiveloc 2018-06-04 13:30:39
ERROR : Column not found in pgSet: replay_timestamp 2018-06-04 13:30:40
ERROR : Column not found in pgSet: isreplaypaused 2018-06-04 13:30:41
ERROR : Column not found in pgSet: rolcatupdate 2018-06-04 13:30:41
ERROR : Column not found in pgSet: rolcatupdate 2018-06-04 13:30:42
ERROR : Column not found in pgSet: rolcatupdate 2018-06-04 13:30:43
ERROR : Column not found in pgSet: rolcatupdate 2018-06-04 13:30:44
ERROR : Column not found in pgSet: rolcatupdate 2018-06-04 13:30:45
ERROR : Column not found in pgSet: rolcatupdate

What do I have to do to avoid these errors in the future? EDIT I am running on MacOS 10.13

Answer 1

_{Community wiki answer:}

You are connecting to PostgreSQL 10, which is not supported.

I am not aware if there is a pgAdmin III version for server version 10 or higher. One choice could be pgAdmin4, or any other client - if you plan to do serious work, consider psql, the command line client.