What is this accessing happening from my webserver running nextcloud?

My nextcloud is installed on premise , but in apache access.log I spotted this :slightly_smiling_face:

xx.xx.xxx.xx, xx.xx.xxx.xx - - [15/Oct/2021:21:04:01 +0100] “GET /nextcloud/apps/richdocumentscode_arm64/proxy.php?req=/hosting/capabilities HTTP/1.1” 302 1470 “-” “Nextcloud Server Crawler”

Where xx.xx.xxx.xx is my public IP of on premise . I want to know what is this happening in background

I think it belongs to CollaboraOnline.

GitHub - CollaboraOnline/richdocumentscode: Built-in CODE Server app

If the app is built with an ARM64 AppImage, it will be named as richdocumentscode_arm64.

richdocumentscode/proxy.php at master · CollaboraOnline/richdocumentscode · GitHub