NC23 / ES7.16: `request [/nextcloud/_search] contains unrecognized parameter: [amp]`

When running occ fulltextsearch:test, i get the following output

> sudo -u www-data php --define apc.enable_cli=1 occ fulltextsearch:test
The process control (PCNTL) extensions are required in case you want to interrupt long running commands - see https://www.php.net/manual/en/book.pcntl.php

.Testing your current setup:  
Creating mocked content provider. ok  
Testing mocked provider: get indexable documents. (2 items) ok  
Loading search platform. (Elasticsearch) ok  
Testing search platform. ok  
Locking process ok  
Removing test. ok  
Pausing 3 seconds 1 2 3 ok  
Initializing index mapping. ok  
Indexing generated documents. ok  
Pausing 3 seconds 1 2 3 ok  
Retreiving content from a big index (license). (size: 32386) ok  
Comparing document with source. ok  
Searching basic keywords:  
 - 'test' fail  
Error detected, unlocking process ok 
In Connection.php line 693:

  {"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"request [/nextcloud/_search] contains unrecognized parameter: [amp]"}],"type":"illegal_argument_exception","reason":"request [/nextcloud/_search] contains unrecognized parameter: [amp]"},"status":40  
  0}                                                                                                                                                                                                                                                                             

fulltextsearch:test [--output [OUTPUT]] [-j|--json] [-d|--platform_delay PLATFORM_DELAY]

The documentation in the wiki tells users to install elasticsearch 6.x, is this addon not compatible with elasticsearch 7.x?

Versions

Nextcloud 23.0.0
PHP 8.0.13 (cli) (built: Nov 22 2021 09:47:37) ( NTS )
Full Text Search 23.0.0
Full Text Search - Elasticsearch Platform 23.0.0
Elasticsearch 7.16.2

nextcloud / fulltextsearch_elasticsearch

NC23 / ES7.16: `request [/nextcloud/_search] contains unrecognized parameter: [amp]` #176

Versions