In Onlyoffice I have sometimes this log error (docservie/out.log)
[2017-11-10 14:32:09.925] [ERROR] nodeJS - sendServerRequest error: docId = 8e83c69b024213eac548;url = https://10.8.9.109/onlyoffice/editor-callback/;data = {"key":"8e83c69b024213eac548","status":2,"url":"https://10.8.9.109:8052/cache/files/8e83c69b024213eac548_6722/output.docx/output.docx?md5=75s2Tw50P_kihH_5_6VrdA==&expires=1512916330&disposition=attachment&ooname=output.docx","changesurl":"https://10.8.9.109:8052/cache/files/8e83c69b024213eac548_6722/changes.zip/changes.zip?md5=XiMeXRbRzfVw5mIxwJSCRg==&expires=1512916330&disposition=attachment&ooname=output.zip","history":{"serverVersion":"4.4.3","changes":[{"created":"2017-11-10 14:25:59","user":{"id":"uid-1510323940871","name":"truc"}}]},"users":["uid-1510323940871"],"actions":[{"type":0,"userid":"uid-1510324323619"}],"lastsave":"2017-11-10T14:25:59.970Z","notmodified":false}
Error: Error response: statusCode:500 ;body:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<title>Page unavailable</title>
</head>
<body>
<h1>Page unavailable</h1>
<p>Sorry, but the requested page is unavailable due to a
server hiccup.</p>
<p>Our engineers have been notified, so check back later.</p>
</body>
</html>
at Request._callback (/var/www/onlyoffice/documentserver/server/Common/sources/utils.js:269:18)
at Request.self.callback (/var/www/onlyoffice/documentserver/server/Common/node_modules/request/request.js:188:22)
at emitTwo (events.js:106:13)
at Request.emit (events.js:191:7)
at Request.<anonymous> (/var/www/onlyoffice/documentserver/server/Common/node_modules/request/request.js:1171:10)
at emitOne (events.js:96:13)
at Request.emit (events.js:188:7)
at IncomingMessage.<anonymous> (/var/www/onlyoffice/documentserver/server/Common/node_modules/request/request.js:1091:12)
at IncomingMessage.g (events.js:292:16)
at emitNone (events.js:91:20)
I solved error, this is due to my onlyoffice ssl certificate.
I have disable ssl onlyoffice verifycation with help to this link Onlyoffice - Documents not saved