Gitlab Error 502

Hi all,
our Gitlab was running fine. We recently moved it to another VM-Host (old one died) and changed the IP Address. AT first everything looked fine, but all of a sudden it crashed and throws error 502 no matter what we try.

We are very new to gitlab. What do we have to collect for you in order to help us?

I read some forums and did the following so far:

gitlab-ctl reconfigure

Running handlers:
There was an error running gitlab-ctl reconfigure:

bash[migrate gitlab-rails database] (gitlab::database_migrations line 49) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received ‘1’
---- Begin output of “bash” “/tmp/chef-script20180725-24546-crqgjz” ----
STDOUT: rake aborted!
ActiveRecord::StatementInvalid: PG::DataCorrupted: ERROR: invalid page in block 13 of relation base/16385/2619
: SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype
FROM pg_type as t
LEFT JOIN pg_range as r ON oid = rngtypid
WHERE
t.typname IN (‘int2’, ‘int4’, ‘int8’, ‘oid’, ‘float4’, ‘float8’, ‘text’, ‘varchar’, ‘char’, ‘name’, ‘bpchar’, ‘bool’, ‘bit’, ‘varbit’, ‘timestamptz’, ‘date’, ‘time’, ‘money’, ‘bytea’, ‘point’, ‘hstore’, ‘json’, ‘jsonb’, ‘cidr’, ‘inet’, ‘uuid’, ‘xml’, ‘tsvector’, ‘macaddr’, ‘citext’, ‘ltree’, ‘interval’, ‘path’, ‘line’, ‘polygon’, ‘circle’, ‘lseg’, ‘box’, ‘timestamp’, ‘numeric’)
OR t.typtype IN (‘r’, ‘e’, ‘d’)
OR t.typinput = ‘array_in(cstring,oid,integer)’::regprocedure
OR t.typelem != 0
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/active_record_data_types.rb:26:in initialize_type_map' /opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/db.rake:51:in block (3 levels) in <top (required)>’
/opt/gitlab/embedded/bin/bundle:23:in load' /opt/gitlab/embedded/bin/bundle:23:in

Caused by:
PG::DataCorrupted: ERROR: invalid page in block 13 of relation base/16385/2619
/opt/gitlab/embedded/service/gitlab-rails/config/initializers/active_record_data_types.rb:26:in initialize_type_map' /opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/db.rake:51:in block (3 levels) in <top (required)>’
/opt/gitlab/embedded/bin/bundle:23:in load' /opt/gitlab/embedded/bin/bundle:23:in
Tasks: TOP => gitlab:db:configure
(See full trace by running task with --trace)
STDERR:
---- End output of “bash” “/tmp/chef-script20180725-24546-crqgjz” ----
Ran “bash” “/tmp/chef-script20180725-24546-crqgjz” returned 1

Running handlers complete

Thank you very much for your help

Can anyone please give us a hint on how to repair our gitlab?