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I get this error in FF/Chrome console when using the compiled version of my application saying: 

"TypeError: a is null"

So I went to the symbol map and searched for symbol a but no occurrence ...
I don't get this error on hosted mode, and it only started to appear since migrating to GWT 2.6
Any idea? Thanks

Adnane.T
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2 Answers2

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Maybe try to compile in Pretty mode to have a more explicit symbol name.

Not sure it has anything to do with GWT 2.6. Same code in GWT 2.5.1 does not have the same error ?

Ronan Quillevere
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  • no it didn't show this error in 2.5, it's a non blocking error since everything works fine. I translated the stack trace using the symbolMap file, so I'm trying to figure out the problem ... – Adnane.T Feb 12 '14 at 12:44
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Ok I found the solution, if anybody's facing the same problem when on compiled mode, look for the symbolMap of the correct permutation in your WEB-INF/deploy folder. This helped me to find which method is causing the error and fix it.

Adnane.T
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