No data returned from cPanel Service error

Hello, everyone, I have an issue with response when calling 'savefile' api in Node.js app. When I send 'content' query param with size smaller than 90KB, In response I get: "{"cpanelresult":{"module":"Fileman","data":[{"charset":"utf-8","path":"/home/somepath/public_html/index.html"}],"func":"savefile","event":{"result":1},"apiversion":2}} " But when content size is larger than 90KB, In response I get: "{"error":"No data returned from cPanel Service"}" Here is the save file function code: return new Promise(function (resolve, reject) { request.post({ url: WHM_BASE_URL + mainWHMsessionToken + '/json-api/cpanel' , qs: { cpanel_jsonapi_apiversion: 2, cpanel_jsonapi_module: 'Fileman', cpanel_jsonapi_func: 'savefile', dir: directory, filename: filename, content: pageContent, user: user }, headers: { 'Authorization': WHM_TOKEN } }, function(err, httpResponse, body){ if (body) { const response = JSON.parse(body); response.cpanelresult.data[0] ? resolve(true): resolve(response.cpanelresult.error); } else { reject(err); } }) } Is there global configuration on WHM for file size? Or on cPanel account? I've tried to change cPanel PHP max POST size and cPanel PHP max upload size from Tweak Settings => PHP, but it made no effects.