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gulp -demo1 error


Hello,

When I run gulp --demo1 for asp.net core, I get the following error. I use Metronic 8.2.3 is the latest version and Windows 11 Pro. I tried it on a MacBook Pro and got the same error. How can I solve this?"

Thank you,

Mustafa

Using gulp config file: "../../gulp.config.js"
[16:31:00] Using gulpfile C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\gulpfile.js
[16:31:00] Starting 'default'...
[16:31:00] Starting 'cleanTask'...
[16:31:00] Finished 'cleanTask' after 68 ms
[16:31:00] Starting 'buildBundleTask'...
[16:31:00] Finished 'buildBundleTask' after 122 ms
[16:31:00] Finished 'default' after 195 ms
Error in plugin "sass"
Message:
node_modules\prism-themes\themes\prismjs.bundle.css
Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'
C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:6365
throw error;
^

Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'
at Object.wrapException (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:2166:43)
at Object._failedAsCheck (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:3646:15)
at Rti._generalAsCheckImplementation [as _as] (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:3635:9)
at ArrayIterator.get$current (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:32948:50)
at Object.get$current$x (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:830:43)
at _SyncStarIterator.moveNext$0 (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:35808:41)
at Object.List_List$from (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:6379:49)
at Object.List_List$unmodifiable (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:6402:47)
at Object._parseImporter (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:27302:51)
at C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:27068:22 {
dartException: <ref *1> PluginError: TypeError: null: type 'JSNull' is not a subtype of type 'String'
at Object.wrapException (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:2166:43)
at Object._failedAsCheck (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:3646:15)
at Rti._generalAsCheckImplementation [as _as] (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:3635:9)
at ArrayIterator.get$current (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:32948:50)
at Object.get$current$x (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:830:43)
at _SyncStarIterator.moveNext$0 (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:35808:41)
at Object.List_List$from (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:6379:49)
at Object.List_List$unmodifiable (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:6402:47)
at Object._parseImporter (C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:27302:51)
at C:\Users\MustafaHepsarilar\source\repos\UI\testUI\metronic_asp.net-core_v8.2.3\Starterkit\_keenthemes\tools\node_modules\sass\sass.dart.js:27068:22 {
formatted: "Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'",
status: 3,
messageFormatted: '\x1B[4mnode_modules\\prism-themes\\themes\\prismjs.bundle.css\x1B[24m\n' +
"Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'",
messageOriginal: "TypeError: null: type 'JSNull' is not a subtype of type 'String'",
relativePath: 'node_modules\\prism-themes\\themes\\prismjs.bundle.css',
message: 'node_modules\\prism-themes\\themes\\prismjs.bundle.css\n' +
"Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'",
__safety: undefined,
_stack: undefined,
plugin: 'gulp-dart-sass',
showProperties: true,
showStack: false,
domainEmitter: PassThrough {
_events: {
close: [Function: onclose],
error: undefined,
prefinish: [Function: prefinish],
finish: [Function: onfinish],
drain: undefined,
data: [Function: ondata],
end: [
[Function: bound onceWrapper] { listener: [Function: onend] },
[Function: onend]
],
readable: undefined,
unpipe: [Function: remove]
},
_readableState: ReadableState {
highWaterMark: 16,
buffer: [],
bufferIndex: 0,
length: 0,
pipes: [
Sink {
_events: [Object],
_writableState: [WritableState],
_maxListeners: undefined,
_eventsCount: 4,
[Symbol(shapeMode)]: true,
[Symbol(kCapture)]: false
}
],
awaitDrainWriters: null,
[Symbol(kState)]: 194521357
},
_writableState: WritableState {
highWaterMark: 16,
length: 0,
corked: 0,
onwrite: [Function: bound onwrite],
writelen: 0,
bufferedIndex: 0,
pendingcb: 0,
[Symbol(kState)]: 17580301,
[Symbol(kBufferedValue)]: null
},
allowHalfOpen: true,
_maxListeners: 0,
_eventsCount: 6,
add: [Function: add],
isEmpty: [Function: isEmpty],
[Symbol(shapeMode)]: true,
[Symbol(kCapture)]: false,
[Symbol(kCallback)]: null
},
domainThrown: false,
'$cachedTrace': _StackTrace {
_exception: [Circular *1],
_trace: "Error: TypeError: null: type 'JSNull' is not a subtype of type 'String'\n" +
' at Object.wrapException (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:2166:43)\n' +
' at Object._failedAsCheck (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:3646:15)\n' +
' at Rti._generalAsCheckImplementation [as _as] (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:3635:9)\n' +
' at ArrayIterator.get$current (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:32948:50)\n' +
' at Object.get$current$x (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:830:43)\n' +
' at _SyncStarIterator.moveNext$0 (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:35808:41)\n' +
' at Object.List_List$from (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:6379:49)\n' +
' at Object.List_List$unmodifiable (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:6402:47)\n' +
' at Object._parseImporter (C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:27302:51)\n' +
' at C:\\Users\\MustafaHepsarilar\\source\\repos\\UI\\testUI\\metronic_asp.net-core_v8.2.3\\Starterkit\\_keenthemes\\tools\\node_modules\\sass\\sass.dart.js:27068:22'
}
}
}

Node.js v20.11.0


user
Mustafa Hepsarilar 2 years ago
Asp.Net Core
2 Answers
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Replies (2)

user
nick smith 2 years ago
Deleted comment
user
Lauris Stepanovs Author 2 years ago

Hi,

Thank you for your feedback.

A conflict with the latest version of the dart-sass plugin likely causes this error. Try adding the following code to your package.json:


"resolutions": {

 "gulp-dart-sass/sass": "1.70.0"

}


After adding this, remove the node_modules, package-lock.json, and yarn.lock files, and then run yarn and gulp --demo1 again. This should force the use of Dart Sass version 1.70.0 and resolve any conflicts with the latest version of the 3rd party plugin.

Let me know if you need further assistance

Regards,
Lauris Stepanovs,
Keenthemes Support Team


C
Chris Sain 2 years ago

I had the same problem and this solution worked for me. Thank you


Text formatting options
Submit
Click any option to insert into your comment. Select text first to wrap it.
  • **text** to make things bold
  • *text* to emphasize
  • ### Heading to make headings
  • [link text](url) for links
  • ![alt text](image-url) to paste in an image
  • - item to make a list
  • 1. item to make an ordered list
  • > quote to quote somebody
  • `code` for single line of code
  • ```js ... ``` for JS code block
  • ```html ... ``` for HTML code block
  • ```scss ... ``` for SCSS code block
  • ```php ... ``` for PHP code block
  • --- for a horizontal rule
  • happy  :)
  • shocked  :|
  • sad  :(
Text formatting options
Submit
Click any option to insert into your comment. Select text first to wrap it.
  • **text** to make things bold
  • *text* to emphasize
  • ### Heading to make headings
  • [link text](url) for links
  • ![alt text](image-url) to paste in an image
  • - item to make a list
  • 1. item to make an ordered list
  • > quote to quote somebody
  • `code` for single line of code
  • ```js ... ``` for JS code block
  • ```html ... ``` for HTML code block
  • ```scss ... ``` for SCSS code block
  • ```php ... ``` for PHP code block
  • --- for a horizontal rule
  • happy  :)
  • shocked  :|
  • sad  :(

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