Cannot read property 'show' of null

[rocket13011]

Hello,

i have the error message :

[ERROR] : TiHTTPClient: at java.lang.Thread.run(Thread.java:818) [ERROR] : HyperloopProxy: (main) [345,3937] Unable to resolve method call. Class: android.support.design.widget.Snackbar, method name: make, args: [{setCenterView=org.appcelerator.kroll.runtime.v8.V8Function@3f493d, drawer=com.tripvi.drawerlayout.DrawerProxy@570f532, on=org.appcelerator.kroll.runtime.v8.V8Function@279d283, UI={create=org.appcelerator.kroll.runtime.v8.V8Function@54bc00}, removeListener=org.appcelerator.kroll.runtime.v8.V8Function@d5c3c39, __controllerPath=widget, toggleLeftView=org.appcelerator.kroll.runtime.v8.V8Function@7b5327e, removeClass=org.appcelerator.kroll.runtime.v8.V8Function@8fd13df, getListener=org.appcelerator.kroll.runtime.v8.V8Function@d49982c, args={id=index, children=[Ljava.lang.Object;@2bb62f5}, bind=org.appcelerator.kroll.runtime.v8.V8Function@6df88a, exitOnClose=false, removeProxyProperty=org.appcelerator.kroll.runtime.v8.V8Function@5490efb, createStyle=org.appcelerator.kroll.runtime.v8.V8Function@3ce0b18, updateViews=org.appcelerator.kroll.runtime.v8.V8Function@2ac3971, setParent=org.appcelerator.kroll.runtime.v8.V8Function@b3b1356, getViewEx=org.appcelerator.kroll.runtime.v8.V8Function@28f9fd7, closeWindow=org.appcelerator.kroll.runtime.v8.V8Function@124c0c4, openWindow=org.appcelerator.kroll.runtime.v8.V8Function@af9fbad, addTopLevelView=org.appcelerator.kroll.runtime.v8.V8Function@bed0ee2, getViews=org.appcelerator.kroll.runtime.v8.V8Function@3446273, unbind=org.appcelerator.kroll.runtime.v8.V8Function@20f2530, resetClass=org.appcelerator.kroll.runtime.v8.V8Function@e7a5a9, __widgetId=kr.yostudio.drawer, getView=org.appcelerator.kroll.runtime.v8.V8Function@d1372e, off=org.appcelerator.kroll.runtime.v8.V8Function@378b2cf, __views={widget=ti.modules.titanium.ui.LabelProxy@bf9645c}, addListener=org.appcelerator.kroll.runtime.v8.V8Function@ebf365, __proxyProperties={}, __iamalloy=true, add=org.appcelerator.kroll.runtime.v8.V8Function@dbd983a, topWindow=ti.modules.titanium.ui.WindowProxy@4f7aceb, removeView=org.appcelerator.kroll.runtime.v8.V8Function@ce66a48, addProxyProperty=org.appcelerator.kroll.runtime.v8.V8Function@e2d60e1, getTopLevelViews=org.appcelerator.kroll.runtime.v8.V8Function@bdcfe06, __events=[Ljava.lang.Object;@1222cc7, addClass=org.appcelerator.kroll.runtime.v8.V8Function@e1be2f4, destroy=org.appcelerator.kroll.runtime.v8.V8Function@dbe2a1d, addEventListener=org.appcelerator.kroll.runtime.v8.V8Function@a3af492, open=org.appcelerator.kroll.runtime.v8.V8Function@c8ace63, widget=ti.modules.titanium.ui.LabelProxy@bf9645c, getProxyPropertyEx=org.appcelerator.kroll.runtime.v8.V8Function@58e3a60, trigger=org.appcelerator.kroll.runtime.v8.V8Function@9984b19, getProxyProperty=org.appcelerator.kroll.runtime.v8.V8Function@b0fc7de}, test, -1] [ERROR] : TiExceptionHandler: (main) [9,3946] ----- Titanium Javascript Runtime Error ----- [ERROR] : TiExceptionHandler: (main) [0,3946] - In /ti.snackbar/index.js:31,10 [ERROR] : TiExceptionHandler: (main) [0,3946] - Message: Uncaught TypeError: Cannot read property 'show' of null [ERROR] : TiExceptionHandler: (main) [0,3946] - Source: snack.show(); [ERROR] : V8Exception: Exception occurred at /ti.snackbar/index.js:31: Uncaught TypeError: Cannot read property 'show' of null

If you can help me?

Tks.