Change block raise an execption: undefined method 'to_tree'

[philgruneich]

Sass 3.4.5 (Selective Steve) Compass 1.1.0.alpha.3 (Polaris) ruby 2.0.0p451 (2014-02-24 revision 45167) [universal.x86_64-darwin13]

Could be similar to https://github.com/Compass/compass/issues/1641

[Listen warning]: Change block raise an execption: undefined method `to_tree' for nil:NilClass
Backtrace:
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:184:in `tree'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:174:in `compute_dependencies'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:149:in `dependencies'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:125:in `dependencies_stale?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:166:in `block in dependency_updated?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:125:in `each'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:125:in `any?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:125:in `dependencies_stale?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:166:in `block in dependency_updated?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:81:in `call'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:81:in `stylesheet_modified_since?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/staleness_checker.rb:69:in `stylesheet_needs_update?'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/compiler.rb:211:in `block in update_stylesheets'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/compiler.rb:209:in `each'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/compiler.rb:469:in `on_file_changed'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/lib/sass/plugin/compiler.rb:328:in `block in watch'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/listener.rb:252:in `call'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/listener.rb:252:in `on_change'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/listener.rb:290:in `block in initialize_adapter'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/adapters/polling.rb:48:in `call'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/adapters/polling.rb:48:in `poll_changed_directories'
    /Library/Ruby/Gems/2.0.0/gems/sass-3.4.5/vendor/listen/lib/listen/adapter.rb:299:in `block in start_poller'

[luke-rooster]

I'm also getting this same issue.

Not sure if it is anything to do with this but I am using global variables via the import feature (one main file pulling in all SCSS files /w variables declared at top, used throughout) sometimes it will flag that x.scss cannot find $v.

Issue is fixed if I cancel the current watch command and re-run it

[seminice]

Any news with this issue? I'm getting the same too.

[earl3s]

I'm also getting this error on version 1.0.1. Any ideas on it?

[byCedric]

Still an issue on 1.0.3...

[benjarwar]

Also reporting the issue on 1.0.3.

[KristobalJunta]

Same trouble, v1.0.3 too

[sherizan]

same here Compass 1.0.3 (Polaris)

[tomasdev]

:+1:

A fix is terminating your compass watch and starting it back again.

[joedaniels]

@tomasdev Not much of a fix since you have to be constantly terminating and starting compass over and over again.

[seminice]

I agree wtih @joedaniels

[benjarwar]

I also agree with @joedaniels.

[krstffr]

I also agree with @joedaniels.

[Jones-S]

same here. 1.0.3

[honucreative]

Getting the same problem.

[duckumu]

I've also been having this issue for months. I stop Compass and run the watch command again to get everything working but... yeah.

ETA: Thought it worth mentioning that the only Compass frameworks I have installed are: compass sassy-maps breakpoint

[Antoinebr]

Same here :/

[mcclaskiem]

Getting this error as well.

Using: Bourbon Bourbon-Neat Custom Silent Classes and mixins/vars

Any word on a fix?

[voidstate]

Also having this issue.

[rebdev]

Same...

[ktoh]

Ditto...

[petemolinero]

Same issue for me.

[ccpotter]

Same issue here. I have multiple projects running compass watch, some local, some on network drives and this seems to only occur when watching files on a network drive. Fixed by resaving the sass file but frustrating none the less. Another thing that I have done is changed where the cache is stored by modifying the config.rb for my network projects. cache_path = 'C:/temp/PROJECTNAME/.sass-cache'

[dynamicdan]

No joy? Fixes?

[jonlambert]

Same here.

[jstoller]

I've been having this problem for a while now and thought it was me. :-/

I'm using the following gems:

• breakpoint (2.5.0)
• bundler (1.9.9)
• chunky_png (1.3.4)
• color-schemer (0.2.8)
• compass (1.0.3)
• compass-blend-modes (0.0.2)
• compass-core (1.0.3)
• compass-import-once (1.0.5)
• compass-normalize (1.5)
• ffi (1.9.8)
• modular-scale (2.0.6)
• multi_json (1.11.0)
• rb-fsevent (0.9.5)
• rb-inotify (0.9.5)
• sass (3.4.14)
• sassy-maps (0.4.0)
• singularitygs (1.6.2)
• toolkit (2.9.0)

[webilhan]

Same error for me

[azclub]

Same error ....

[tsi]

Same here too...

[artursopelnik]

Same error here …

[Haikson]

Same error too...

[gcasalett]

Just keeping this alive. This issue started out of the blue a couple of weeks ago. Only significant software change I can think of is I upgraded to Adobe Suite CC 2015.

Ruby v. 2.2.2p95 Sass v. 4.3.13 Compass v. 1.0.3

[japascal]

same here

[SedueRey]

lol but ... same here :)

[seminice]

solved by not using compass.

[jstoller]

It seems to be Compass watch that's causing the problem here. I started using Gulp to watch my files and trigger a compass compile and that works fine.

[striky1]

same here

compass (1.0.3) sass (3.4.13)

[lutoma]

Getting this too from time to time after saving a file.

[x1unix]

I aslo have this problem. I think that this is a Compass bug.

[ItIsInspiring]

i have the same problem. My "solution" is to make compass restart again with "ctrl"+"c" and "o". When it restarts, it works again.

[Kwaadpepper]

Also have this bug, you may do : while :; do compass compile; sleep 2; done

[fabiofidanza]

Happening randomly here too "compass","1.0.1" "sass","3.4.18"

Only fix is to kill and restart the watcher process.

[JamesVanWaza]

Using compass and compass-import-once is not recommended to use them at the same time, Only use Compass.

[petulla]

Same here..

[ymondirNm]

if you have imports, you can save another file(add and remove a space) and it works, it's not a fix but still better than restart the watcher

[JamesVanWaza]

@fabiofidanza Are you still seeing the problem, if so, please post your gruntfile so I can see what's wrong as well as a list of node_modules you are using.

[fabiofidanza]

@jgacuca567 I'm using a plain old compass watch, launched via nohup:

nohup bundle exec compass watch >compass.log &

here are the Gems that are used in one of the projects where I experience the problem:

chunky_png (1.3.4)
compass (1.0.1)
  chunky_png (~> 1.2)
  compass-core (~> 1.0.1)
  compass-import-once (~> 1.0.5)
  rb-fsevent (>= 0.9.3)
  rb-inotify (>= 0.9)
  sass (>= 3.3.13, < 3.5)
compass-core (1.0.3)
  multi_json (~> 1.0)
  sass (>= 3.3.0, < 3.5)
compass-import-once (1.0.5)
  sass (>= 3.2, < 3.5)
ffi (1.9.10)
multi_json (1.11.2)
rb-fsevent (0.9.5)
rb-inotify (0.9.5)
  ffi (>= 0.5.0)
sass (3.4.15)

Thanks

[JamesVanWaza]

@fabiofidanza I guess, for me I have been using NPM Modules, see My gist file, see how I have setup file. As of now when I run sudo grunt, no errors from compass are found.

https://gist.github.com/jgacuca567/143754cd4590df7f00fd

[imme-emosol]

My guess would be that there's something wrong on line 80 in /var/lib/gems/2.1.0/gems/sass-3.4.19/lib/sass/plugin/staleness_checker.rb On that line the importer should be set to the given option filesystem_importer if it's nil . The importer however seems to end up as nil at /var/lib/gems/2.1.0/gems/sass-3.4.19/vendor/listen/lib/listen/adapter.rb :299 .

The other possibility is that somehow importer gets reset to nil. Which seems to be able to be because of the thread as mentioned in https://github.com/guard/listen/issues/219 . On a short test this Thread-timing-issues seems to fix the issue for me. I changed the DEFAULT_LATENCY on line 22 from 0.25 to 2 in the file : /var/lib/gems/2.1.0/gems/sass-3.4.19/vendor/listen/lib/listen/adapter.rb .

[otygblodhemn]

Same issue since today. Not viewed before.

autoprefixer-rails (6.0.3) bigdecimal (1.2.6) bootstrap-sass (3.3.5.1) chunky_png (1.3.4) compass (1.0.3) compass-core (1.0.3) compass-import-once (1.0.5) execjs (2.6.0) ffi (1.9.10 x86-minggw32) io-console (0.4.3) json (1.8.1) minitest (5.4.3) multi_json (1.11.2) power_assert (0.2.2) psych (2.0.8) rake (10.4.2) rb-fsevent (0.9.6) rb-inotify (0.9.5) rdoc (4.2.0) sass (3.4.19) test-unit (3.0.8)

[bnomei]

same... compass (1.0.3), compass-core (1.0.3), compass-import-once (1.0.5), susy (2.2.6)