ActiveRecord::StatementInvalid: PG::UntranslatableCharacter: ERROR: unsupported Unicode escape sequence

https://sentry.gitlab.net/gitlab/gitlabcom/issues/4092696/?referrer=gitlab_plugin

PG::UntranslatableCharacter: ERROR:  unsupported Unicode escape sequence
LINE 1: ...5e6b4b0d3255bfef95601890afd80709', 3561397, TRUE, '{"name":"...
                                                             ^
DETAIL:  \u0000 cannot be converted to text.
CONTEXT:  JSON data, line 1: ...tring-without-format"},{"name":"USER-ID","value":...

  lib/gitlab/database/load_balancing/connection_proxy.rb:120:in `public_send'
    connection.public_send(...)
  lib/gitlab/database/load_balancing/connection_proxy.rb:120:in `block in write_using_load_balancer'
    connection.public_send(...)
  lib/gitlab/database/load_balancing/load_balancer.rb:127:in `block in read_write'
    yield connection
  lib/gitlab/database/load_balancing/load_balancer.rb:205:in `retry_with_backoff'
    return yield attempt # Yield the current attempt count
  lib/gitlab/database/load_balancing/load_balancer.rb:116:in `read_write'
    retry_with_backoff(attempts: attempts) do |attempt|
...
(143 additional frame(s) were not displayed)

ActiveRecord::StatementInvalid: PG::UntranslatableCharacter: ERROR:  unsupported Unicode escape sequence
LINE 1: ...5e6b4b0d3255bfef95601890afd80709', 3561397, TRUE, '{"name":"...
                                                             ^
DETAIL:  \u0000 cannot be converted to text.
CONTEXT:  JSON data, line 1: ...tring-without-format"},{"name":"USER-ID","value":...