我要导入就的.ccb文件到项目里报错
Error: Illegal format of project file.
at EventEmitter.k.on.n (D:\CocosCreator\resources\app.asar\editor-framework\lib\main\ipc.js:1:5026)
at emitThree (events.js:116:13)
at EventEmitter.emit (events.js:197:7)
at WebContents. (D:\CocosCreator\resources\electron.asar\browser\api\web-contents.js:247:13)
at emitTwo (events.js:106:13)
at WebContents.emit (events.js:194:7)
at Object.importer (D:\CocosCreator\resources\app.asar\editor\builtin\project-importer\core\ccb\ccbproj-importer.js:1:1269)
at EventEmitter. (D:\CocosCreator\resources\app.asar\editor\builtin\project-importer\core\import-worker.js:1:1307)
at emitThree (events.js:116:13)
at EventEmitter.emit (events.js:197:7)
at D:\CocosCreator\resources\app.asar\editor-framework\lib\renderer\ipc.js:1:3357
at EventEmitter.o.on.i (D:\CocosCreator\resources\app.asar\editor-framework\lib\renderer\ipc.js:1:3369)
at emitMany (events.js:127:13)
at EventEmitter.emit (events.js:204:7)
at D:\CocosCreator\resources\app.asar\editor\builtin\project-importer\main.js:1:1204
at EventEmitter.k.on.n (D:\CocosCreator\resources\app.asar\editor-framework\lib\main\ipc.js:1:5204)
at emitThree (events.js:116:13)
at EventEmitter.emit (events.js:197:7)
at WebContents. (D:\CocosCreator\resources\electron.asar\browser\api\web-contents.js:247:13)
at emitTwo (events.js:106:13)
at WebContents.emit (events.js:194:7)
