> For the complete documentation index, see [llms.txt](https://tracer.gitbook.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tracer.gitbook.io/manual/support/troubleshooting/out-of-bounds.md).

# Out of bounds exception

Here is another error reported by a TRACER user (line `16`).

```
START TO PROCESS LEVEL 1 (PRE-PROCESSING)

Preprocessing baseform graph in data/corpora/LLCT2/LLCT2.lemma ...
Total number of loaded word forms is 749
eu.etrap.tracer.TracerException: java.lang.ArrayIndexOutOfBoundsException: 1
    at eu.etrap.tracer.preprocessing.graph.AbstractWordGraphHandler.loadInputFile(AbstractWordGraphHandler.java:136)
    at eu.etrap.tracer.preprocessing.graph.BaseFormWordGraphPreprocessingImpl.preprocessing(BaseFormWordGraphPreprocessingImpl.java:48)
    at eu.etrap.tracer.preprocessing.WordGraphPreparer.prepareBaseformGraph(WordGraphPreparer.java:107)
    at eu.etrap.tracer.preprocessing.WordGraphPreparer.prepare(WordGraphPreparer.java:70)
    at eu.etrap.tracer.AbstractTracerFrameWork.process(AbstractTracerFrameWork.java:151)
    at eu.etrap.tracer.Tracer.process(Tracer.java:56)
    at eu.etrap.tracer.Tracer.main(Tracer.java:69)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
    at eu.etrap.tracer.preprocessing.graph.AbstractWordGraphHandler.loadInputFile(AbstractWordGraphHandler.java:113)
    ... 6 more
Message: java.lang.ArrayIndexOutOfBoundsException: 1
```

As this error message indicates in line `3`, the source of the problem is the `.lemma` file. In this particular use case, five entries in the file were missing one of three columns of data required. Adding the missing information in the third column fixed the issue.