# Unable to Build And Preview On android

**URL:** <https://forums.fusetools.com/t/unable-to-build-and-preview-on-android/1156>\
**Category:** Bug Reports\
**Created:** [April 7, 2017, 7:41pm UTC](https://forums.fusetools.com/t/unable-to-build-and-preview-on-android/1156 "2017-04-07T19:41:06Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![oussie11](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/oussie11/32/323_2.png) [@oussie11](https://forums.fusetools.com/u/oussie11)\
**Post date:** [April 7, 2017, 7:41pm UTC](https://forums.fusetools.com/t/unable-to-build-and-preview-on-android/1156/1 "2017-04-07T19:41:06Z")

</div>

(Fuse Version 0.36.0 (build 11838),  
Windows 10)  
When I try `fuse preview -tandroid` i receive this error:

```auto
λ fuse preview -tandroid
Fuse 0.36.0 (build 11838)
Build started: FullCompile
Configuring (2.1 s)
Compiling syntax tree (1.7 s)
Generating code and data (8.2 s)
C:\Users\Oussama\AppData\Local\Fusetools\Packages\UnoCore\0.47.12\targets\android\app\build.gradle(1.1): FATAL E6101: Object reference not set to an instance of an object.
C:\Users\Oussama\AppData\Local\Fusetools\Packages\UnoCore\0.47.12\targets\android\app\build.gradle(1,2): FatalError E6101: Object reference not set to an instance of an object.
Build ended
fuse: Failed to compile project

```

The local preview option works fine  
and I have tried previewing several apps and I get the same error.  
Thanks in advance!