在Ionic4项目的根目录中运行 ionic cordova运行浏览器--verbose 时，出现错误“当前工作目录不是基于Cordova的项目”。请参见下面的错误输出。
我注意到该命令创建了一个“ www”文件夹，只是在几秒钟后再次将其删除。当我在删除文件夹后手动添加该文件夹时（但是当命令仍在运行时），我可以防止该错误。但是，“ www”文件夹将保持空白，并且所提供的网页将显示找不到文件。
Current working directory is not a Cordova-based project.
CordovaError: Current working directory is not a Cordova-based project.
at Object.cdProjectRoot (C:\nvm\v11.3.0\node_modules\cordova\node_modules\cordova-lib\src\cordova\util.js:170:15)
at C:\nvm\v11.3.0\node_modules\cordova\node_modules\cordova-lib\src\cordova\run.js:29:40
at _fulfilled (C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:854:54)
at C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:883:30
at Promise.promise.promiseDispatch (C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:816:13)
at C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:877:14
at runSingle (C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:137:13)
at flush (C:\nvm\v11.3.0\node_modules\cordova\node_modules\q\q.js:125:13)
at internalTickCallback (internal/process/next_tick.js:70:11)
at process._tickCallback (internal/process/next_tick.js:47:5)
[ERROR] An error occurred while running subprocess cordova.
cordova run browser --verbose exited with exit code 1.
Re-running this command with the --verbose flag may provide more information.
ionic:cli-framework:utils:process onBeforeExit handler: process.exit received +0ms
ionic:cli-framework:utils:process onBeforeExit handler: running 2 functions +1ms
ionic:cli-framework:utils:process error while killing process tree for 15736: { Error: Command failed: taskkill /pid 15736 /T /F
ionic:cli-framework:utils:process ERROR: The process "15736" not found.
ionic:cli-framework:utils:process
ionic:cli-framework:utils:process at ChildProcess.exithandler (child_process.js:294:12)
ionic:cli-framework:utils:process at ChildProcess.emit (events.js:182:13)
ionic:cli-framework:utils:process at maybeClose (internal/child_process.js:978:16)
ionic:cli-framework:utils:process at Process.ChildProcess._handle.onexit (internal/child_process.js:265:5)
ionic:cli-framework:utils:process killed: false,
ionic:cli-framework:utils:process code: 128,
ionic:cli-framework:utils:process signal: null,
ionic:cli-framework:utils:process cmd: 'taskkill /pid 15736 /T /F' } +288ms
ionic:cli-framework:utils:process onBeforeExit handler: error from function: { Error: Command failed: taskkill /pid 15736 /T /F
ionic:cli-framework:utils:process ERROR: The process "15736" not found.
ionic:cli-framework:utils:process
ionic:cli-framework:utils:process at ChildProcess.exithandler (child_process.js:294:12)
ionic:cli-framework:utils:process at ChildProcess.emit (events.js:182:13)
ionic:cli-framework:utils:process at maybeClose (internal/child_process.js:978:16)
ionic:cli-framework:utils:process at Process.ChildProcess._handle.onexit (internal/child_process.js:265:5)
ionic:cli-framework:utils:process killed: false,
ionic:cli-framework:utils:process code: 128,
ionic:cli-framework:utils:process signal: null,
ionic:cli-framework:utils:process cmd: 'taskkill /pid 15736 /T /F' } +6ms
ionic:cli-framework:utils:process error while killing process tree for 10672: { Error: Command failed: taskkill /pid 10672 /T /F
ionic:cli-framework:utils:process ERROR: The process "10672" not found.
ionic:cli-framework:utils:process
ionic:cli-framework:utils:process at ChildProcess.exithandler (child_process.js:294:12)
ionic:cli-framework:utils:process at ChildProcess.emit (events.js:182:13)
ionic:cli-framework:utils:process at maybeClose (internal/child_process.js:978:16)
ionic:cli-framework:utils:process at Socket.stream.socket.on (internal/child_process.js:395:11)
ionic:cli-framework:utils:process at Socket.emit (events.js:182:13)
ionic:cli-framework:utils:process at Pipe._handle.close (net.js:616:12)
ionic:cli-framework:utils:process killed: false,
ionic:cli-framework:utils:process code: 128,
ionic:cli-framework:utils:process signal: null,
ionic:cli-framework:utils:process cmd: 'taskkill /pid 10672 /T /F' } +7ms
ionic:cli-framework:utils:process onBeforeExit handler: error from function: { Error: Command failed: taskkill /pid 10672 /T /F
ionic:cli-framework:utils:process ERROR: The process "10672" not found.
ionic:cli-framework:utils:process
ionic:cli-framework:utils:process at ChildProcess.exithandler (child_process.js:294:12)
ionic:cli-framework:utils:process at ChildProcess.emit (events.js:182:13)
ionic:cli-framework:utils:process at maybeClose (internal/child_process.js:978:16)
ionic:cli-framework:utils:process at Socket.stream.socket.on (internal/child_process.js:395:11)
ionic:cli-framework:utils:process at Socket.emit (events.js:182:13)
ionic:cli-framework:utils:process at Pipe._handle.close (net.js:616:12)
ionic:cli-framework:utils:process killed: false,
ionic:cli-framework:utils:process code: 128,
ionic:cli-framework:utils:process signal: null,
ionic:cli-framework:utils:process cmd: 'taskkill /pid 10672 /T /F' } +6ms
ionic:cli-framework:utils:process onBeforeExit handler: exiting (exit code 1) +8ms
详细信息
Ionic:
ionic (Ionic CLI) : 4.5.0 (C:\nvm\v11.3.0\node_modules\ionic)
Ionic Framework : @ionic/angular 4.0.0-beta.15 (C:\Users\Simon Driesen\Projects\questionnaire-app\node_modules\@ionic\angular)
@angular-devkit/build-angular : 0.7.5 (C:\Users\Simon Driesen\Projects\questionnaire-app\node_modules\@angular-devkit\build-angular)
@angular-devkit/schematics : 7.1.0
@angular/cli : 7.1.0
@ionic/angular-toolkit : 1.2.0 (C:\Users\Simon Driesen\Projects\questionnaire-app\node_modules\@ionic\angular-toolkit)
Cordova:
cordova (Cordova CLI) : not installed
Cordova Platforms : not available
Cordova Plugins : not available
System:
NodeJS : v11.3.0 (C:\nodejs\node.exe)
npm : 6.4.1
OS : Windows 10
答案 0 :(得分：0)
尝试执行const combined = combineLatest(source1, source2, source3, source4);
combined.subscribe(
chart=> {
if (chart[0] != undefined && chart[1] != undefined && chart[2] != undefined && chart[2] != undefined
&& chart[3] != undefined) {
this.chartstest= chart[0];
callFunction(test);
},
error => {
console.log(error);
},
() => {
this.loading = false;
}
);
。也许项目中缺少一些Cordova节点模块。
答案 1 :(得分：0)
在运行命令之前，您是否尝试过创建www文件夹？
如果可行，请尝试将www文件夹添加到源代码管理系统（git，svn等）中，以便在签出代码时创建该文件夹，从而阻止了构建系统尝试重新创建。
在您的.gitignore文件（如果使用git）中，添加以下行：
# excludes everything inside the folder
www/*
# but do not exclude .gitkeep file, so the folder can be checked into the repository
!www/.gitkeep