office365 sync file failed, sharepoint 2013 is ok. The error message as following:

[zhijunzhou]

[14:03:56] spsave: Error occured:
[14:03:56] spsave: Invalid STS request.

[14:03:56] spsave: Stack trace:

[14:03:56] spsave: Error: Invalid STS request.

 at C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\node_module
s\node-spoauth\sharepoint.js:196:13
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\node_module
s\node-spoauth\sharepoint.js:119:21
    at Parser.<anonymous> (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp
-request\node_modules\node-spoauth\sharepoint.js:28:21)
    at emitOne (events.js:77:13)
    at Parser.emit (events.js:169:7)
    at Object.onclosetag (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-
request\node_modules\node-spoauth\node_modules\xml2js\lib\xml2js.js:447:26)
    at emit (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\node_
modules\node-spoauth\node_modules\xml2js\node_modules\sax\lib\sax.js:640:35)
    at emitNode (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\n
ode_modules\node-spoauth\node_modules\xml2js\node_modules\sax\lib\sax.js:645:5)
    at closeTag (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\n
ode_modules\node-spoauth\node_modules\xml2js\node_modules\sax\lib\sax.js:905:7)
    at Object.write (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-reque
st\node_modules\node-spoauth\node_modules\xml2js\node_modules\sax\lib\sax.js:1449:13)
    at Parser.exports.Parser.Parser.parseString (C:\zhou__project_\nodejs\days\process\node_modules\
spsave\node_modules\sp-request\node_modules\node-spoauth\node_modules\xml2js\lib\xml2js.js:508:31)
    at Parser.parseString (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp
-request\node_modules\node-spoauth\node_modules\xml2js\lib\xml2js.js:7:59)
    at parseXml (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\n
ode_modules\node-spoauth\sharepoint.js:31:12)
    at IncomingMessage.<anonymous> (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_m
odules\sp-request\node_modules\node-spoauth\sharepoint.js:112:13)
From previous event:
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\lib\src\cor
e\auth\OnlineResolver.js:24:13
From previous event:
    at OnlineResolver.applyAuthHeaders (C:\zhou__project_\nodejs\days\process\node_modules\spsave\no
de_modules\sp-request\lib\src\core\auth\OnlineResolver.js:13:16)
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\lib\src\cor
e\SPRequest.js:28:18
From previous event:
    at coreRequest (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-reques
t\lib\src\core\SPRequest.js:12:16)
    at spRequestFunc (C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-requ
est\lib\src\core\SPRequest.js:52:20)
    at Function.spRequestFunc.(anonymous function) [as post] (C:\zhou__project_\nodejs\days\process\
node_modules\spsave\node_modules\sp-request\lib\src\core\SPRequest.js:92:24)
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\node_modules\sp-request\lib\src\cor
e\SPRequest.js:70:27
From previous event:
    at Function.spRequestFunc.requestDigest (C:\zhou__project_\nodejs\days\process\node_modules\spsa
ve\node_modules\sp-request\lib\src\core\SPRequest.js:62:16)
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\FileSaver.js:53:36
    at processImmediate [as _immediateCallback] (timers.js:383:17)
From previous event:
    at FileSaver.saveFile (C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\Fi
leSaver.js:52:14)
    at FileSaver.save (C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\FileSa
ver.js:37:18)
    at saveSingleFile (C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\SPSave
.js:69:47)
    at saveFileArray (C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\SPSave.
js:54:9)
    at C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\SPSave.js:25:13
From previous event:
    at spsave (C:\zhou__project_\nodejs\days\process\node_modules\spsave\lib\src\core\SPSave.js:12:1
2)
    at save (C:\zhou__project_\nodejs\days\process\gulpfile.js:16:3)
    at Gulp.<anonymous> (C:\zhou__project_\nodejs\days\process\gulpfile.js:30:2)
    at module.exports (C:\zhou__project_\nodejs\days\process\node_modules\gulp\node_modules\orchestr
ator\lib\runTask.js:34:7)
    at Gulp.Orchestrator._runTask (C:\zhou__project_\nodejs\days\process\node_modules\gulp\node_modu
les\orchestrator\index.js:273:3)
    at Gulp.Orchestrator._runStep (C:\zhou__project_\nodejs\days\process\node_modules\gulp\node_modu
les\orchestrator\index.js:214:10)
    at Gulp.Orchestrator.start (C:\zhou__project_\nodejs\days\process\node_modules\gulp\node_modules
\orchestrator\index.js:134:8)
    at C:\Users\zhouzh\AppData\Roaming\npm\node_modules\gulp\bin\gulp.js:129:20
    at doNTCallback0 (node.js:419:9)
    at process._tickCallback (node.js:348:13)
    at Function.Module.runMain (module.js:469:11)
    at startup (node.js:136:18)
    at node.js:963:3
{ [Error: Invalid STS request.
]
  cause:
   [Error: Invalid STS request.
   ],
  isOperational: true }

[s-KaiNet]

I've just run integration testing for spsave and gulp-spsave and everything works fine.
Make sure you provided valid credentials. Can you also post your spsave config here?

[zhijunzhou]

@s-KaiNet
I just write a simple task as the following:

gulp.task('spsave', function () {
    spsave({
        siteUrl: 'https://hpenterprise.sharepoint.com/teams/Solutions',
        username: 'xxx@xx.com',
        password: 'xxx',
        folder: 'SiteAssets',
        fileName: 'format.js',
        fileContent: 'hello world',
        notification: true,
        checkin: true,
        checkinType: 1
    })
    .then(function(){
        console.log('saved');
    })
    .catch(function(err){
        console.log(err);
    });
})

I can sure the email and password is correct, because i can upload the files to the sharepoint 2013 successfully!

[s-KaiNet]

It looks like your password\username contains & symbol.
Quick fix for you is to replace this symbol with html code &
For example instead of

spsave({
        siteUrl: 'url',
        username: 'xxx@xx.com',
        password: 'P&ssword',
.....
    })

put following:

spsave({
        siteUrl: 'url',
        username: 'xxx@xx.com',
        password: 'P&ssword',
.....  

    })

Besides I'm working on a proper fix in spsave code.

[s-KaiNet]

This issue was moved to s-KaiNet/sp-request#1