XF 2.1 Problem with debuging less error

[CNK]

Some time after some changes in my style I have error:

Server error log
Less_Exception_Chunk: ParseError: missing opening `{` in anonymous-file-0.less on line 2794, column 1 2792| -webkit-font-smoothing: antialiased; 2793| -moz-osx-font-smoothing: grayscale; 2794| } 2795| 2796| .m-faContent(@content, @width: false, @direction: false) 2797| { src/vendor/oyejorge/less.php/lib/Less/Parser.php:677
Generated by: Unknown account 6 Marzec 2019 o 02:10
Stack trace
#0 src/vendor/oyejorge/less.php/lib/Less/Parser.php(621): Less_Parser->GetRules(NULL)
#1 src/vendor/oyejorge/less.php/lib/Less/Parser.php(449): Less_Parser->_parse()
#2 src/XF/CssRenderer.php(394): Less_Parser->parse('// Note that th...')
#3 src/XF/CssRenderer.php(342): XF\CssRenderer->renderToCss('public:core.les...', '// Note that th...')
#4 src/XF/CssRenderer.php(250): XF\CssRenderer->renderTemplate('public:core.les...', NULL)
#5 src/XF/CssRenderer.php(116): XF\CssRenderer->renderTemplates(Array, Array, Array)
#6 src/XF/CssWriter.php(53): XF\CssRenderer->render(Array)
#7 css.php(30): XF\CssWriter->run(Array, 12, 3, '66c8ce94d2e7ddc...')
#8 {main}
Request state
array(4) {
  ["url"] => string(141) "/css.php?css=public%3Anormalize.css%2Cpublic%3Acore.less%2Cpublic%3Aapp.less&s=12&l=3&d=1551834524&k=66c8ce94d2e7ddc33ac72a1b47bbfe6c21dd6777"
  ["_GET"] => array(5) {
    ["css"] => string(53) "public:normalize.css,public:core.less,public:app.less"
    ["s"] => string(2) "12"
    ["l"] => string(1) "3"
    ["d"] => string(10) "1551834524"
    ["k"] => string(40) "66c8ce94d2e7ddc33ac72a1b47bbfe6c21dd6777"
  }
  ["_POST"] => array(0) {
  }
}

The problem appeared with a delay, probably because of styles in cache. Now I can't locate the fault, because the name 'anonymous-file-0.less' doesn't tell me anything.

 

[Paul B]

Try the core.less file, if that has been edited.

Otherwise look through the customised components, starting with the ones which were changed just prior to the problem starting.

 

[CNK]

I found the cause of the problem:

v1



v2


v3


all custom padding settings make faults in .less compiling (also blank input fields):



I noticed It's only okay when put settings like @xf-paddingSmall or @xf-paddingMedium to All (first padding input field). Empty fields and custom values given in pixels cause an error.

 

[Paul B]

You can't just enter 0 - it has to be blank or 0px.

 

[CNK]

but in my case all blank fields also cause a problem so I will try to bypass it in a different way - by editing the .less files.