fail to run browser example(can not find some mudules ,yarn step failed )

[zhoujingfighting]

follow the instruction from the official documents,something wrong happened
cd theia
yarn

rror ~/theia/node_modules/@theia/electron: Command failed.
Exit code: 127
Command: node scripts/post-install.js
Arguments: 
Directory: /Users/mima1234/Desktop/zhoujing/theia/node_modules/@theia/electron
Output:
gyp info it worked if it ends with ok
gyp info using node-gyp@7.1.2
gyp info using node@12.14.1 | darwin | x64
gyp info find Python using Python version 3.9.5 found at "/usr/local/opt/[email protected]/bin/python3.9"
gyp info spawn /usr/local/opt/python@3.9/bin/python3.9
gyp info spawn args [
gyp info spawn args   '/Users/mima1234/Desktop/zhoujing/theia/node_modules/node-gyp/gyp/gyp_main.py',
gyp info spawn args   'binding.gyp',
gyp info spawn args   '-f',
gyp info spawn args   'make',
gyp info spawn args   '-I',
gyp info spawn args   '/Users/mima1234/Desktop/zhoujing/theia/dev-packages/electron/native/build/config.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/Users/mima1234/Desktop/zhoujing/theia/node_modules/node-gyp/addon.gypi',
gyp info spawn args   '-I',
gyp info spawn args   '/Users/mima1234/Library/Caches/node-gyp/12.14.1/include/node/common.gypi',
gyp info spawn args   '-Dlibrary=shared_library',
gyp info spawn args   '-Dvisibility=default',
gyp info spawn args   '-Dnode_root_dir=/Users/mima1234/Library/Caches/node-gyp/12.14.1',
gyp info spawn args   '-Dnode_gyp_dir=/Users/mima1234/Desktop/zhoujing/theia/node_modules/node-gyp',
gyp info spawn args   '-Dnode_lib_file=/Users/mima1234/Library/Caches/node-gyp/12.14.1/<(target_arch)/node.lib',
gyp info spawn args   '-Dmodule_root_dir=/Users/mima1234/Desktop/zhoujing/theia/dev-packages/electron/native',
gyp info spawn args   '-Dnode_engine=v8',
gyp info spawn args   '--depth=.',
gyp info spawn args   '--no-parallel',
gyp info spawn args   '--generator-output',
gyp info spawn args   'build',
gyp info spawn args   '-Goutput_dir=.'
gyp info spawn args ]
gyp info spawn make
gyp info spawn args [ 'BUILDTYPE=Release', '-C', 'build' ]
  CC(target) Release/obj.target/ffmpeg/src/ffmpeg.o
  CC(target) Release/obj.target/ffmpeg/src/mac-ffmpeg.o
  SOLINK_MODULE(target) Release/ffmpeg.node
gyp info ok 
Downloading tmp-22616-0-SHASUMS256.txt-9.4.4
Error: connect ETIMEDOUT 52.74.223.119:443
Error: connect ETIMEDOUT 52.74.223.119:443
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1134:16) {
  errno: 'ETIMEDOUT',
  code: 'ETIMEDOUT',
  syscall: 'connect',
  address: '52.74.223.119',
  port: 443
}

so , what's wrong with this issue????
I cloned the project from official documents , node --version 12.14.1 yarn version 1.7.0

[vince-fugnitto]

@zhoujingfighting can you clarify the steps performed to reach the error? Can you also confirm if you satisfied the prerequisites?

To build and run the browser example from https://github.com/eclipse-theia/theia it should be:

git clone https://github.com/eclipse-theia/theia \
&& cd theia \
&& yarn \
&& cd examples/browser \
&& yarn run start

[zhoujingfighting]

yes, I satisfied the prerequisitis,by reloading the project ,the problem solved,thanks