# Forward() got an unexpected keyword argument 'labels\_mask'

**URL:** </static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fforward-got-an-unexpected-keyword-argument-labels-mask%2F26152%3E%5C
**Category:** Beginners\
**Created:** [November 16, 2022, 5:57am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fforward-got-an-unexpected-keyword-argument-labels-mask%2F26152 "2022-11-16T05:57:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![amagzari](https://avatars.discourse-cdn.com/v4/letter/a/97f17d/32.png) [@amagzari](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Famagzari)%5C
**Post date:** [November 16, 2022, 5:57am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fforward-got-an-unexpected-keyword-argument-labels-mask%2F26152%2F1 "2022-11-16T05:57:55Z")

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Hello,

I am new to transformers, and am currently following this tutorial for my school project: [Summarization - Hugging Face LLM Course](https://huggingface.co/course/en/chapter7/5?fw=pt)

I am following the instructions in the Accelerate section, except I am trying to fine tune the google/t5-v1\_1-small model on the cnn\_dailymail dataset. Eveything seems fine, but when I try to run the training loop, I get the following error trace:

## 0% 0/3230 [00:00\<?, ?it/s]

TypeError Traceback (most recent call last)  
 in   
9 model.train()  
10 for step, batch in enumerate(train\_dataloader):  
—\> 11 outputs = model(\*\*batch)  
12 loss = outputs.loss  
13 accelerator.backward(loss)

/usr/local/lib/python3.7/dist-packages/torch/nn/modules/module.py in \_call\_impl(self, \*input, \*\*kwargs)  
1128 if not (self.\_backward\_hooks or self.\_forward\_hooks or self.\_forward\_pre\_hooks or \_global\_backward\_hooks  
1129 or \_global\_forward\_hooks or \_global\_forward\_pre\_hooks):  
 → 1130 return forward\_call(\*input, \*\*kwargs)  
1131 # Do not call functions when jit is used  
1132 full\_backward\_hooks, non\_full\_backward\_hooks = ,

TypeError: forward() got an unexpected keyword argument ‘labels\_mask’

I already found question similar to mine, but the answers did not necessarily help.

thank you so much in advance!!!  
Ali

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<div class="post-metadata">

**Author:** ![amagzari](https://avatars.discourse-cdn.com/v4/letter/a/97f17d/32.png) [@amagzari](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Famagzari)%5C
**Post date:** [November 20, 2022, 4:20am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fforward-got-an-unexpected-keyword-argument-labels-mask%2F26152%2F2 "2022-11-20T04:20:06Z")

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Could someone please enlighten me?