"Extend lending period" button not working on android

Summary

Clicking the button does not change anything.

Steps to reproduce

Log-in with the HeBIS test user (********2498)

What is the current bug behavior?

Nothing happens when "extend landing period" button is clicked.

What is the expected correct behavior?

Should extend the item's landing period.

Relevant logs and/or screenshots

{
    "error": "invalid_request",
    "code": "400",
    "error_description": "Can not interpret:{\"doc\":\"[object Object]\"}",
    "location": "/core/300190132498/renew"
}

{
    "callbackId": "49874023",
    "pluginId": "CapacitorHttp",
    "methodName": "post",
    "options": {
        "url": "https://hds.hebis.de/paia/core/300190132498/renew",
        "data": {
            "doc": "[object Object]"
        },
        "headers": {
            "Authorization": "Bearer: VALID_ACCESS_TOKEN",
            "Content-Type": "application/json"
        }
    }
}

cc: @abcdev