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Creator 版本：2.3.1
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目标平台： Web
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详细报错信息，包含调用堆栈：
TypeError: Failed to execute ‘shaderSource’ on ‘WebGLRenderingContext’: parameter 1 is not of type ‘WebGLShader’.
at _createShader (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\gfx\program.js:205:6)
at Program.link (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\gfx\program.js:96:22)
at ProgramLib.getProgram (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\core\program-lib.js:277:26)
at ForwardRenderer._draw (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\core\base-renderer.js:346:32)
at ForwardRenderer._drawItems (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\renderers\forward-renderer.js:357:14)
at ForwardRenderer._opaqueStage (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\renderers\forward-renderer.js:388:10)
at ForwardRenderer._render (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\core\base-renderer.js:238:7)
at ForwardRenderer.render (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\renderer\renderers\forward-renderer.js:123:12)
at Function.RenderFlow.render (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\core\renderer\render-flow.js:283:12)
at Object.render (D:\cocos_creator\CocosCreator\resources\engine\bin.cache\dev\cocos2d\core\renderer\index.js:209:18) -
出现概率：频繁
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额外线索：打开cocos不久之后会出现这个错误，此时场景编辑器无法显示正常内容，再次重启cocos会正常显示，但是过一段时间之后又会出现该错误，如此一直反复下去
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