Kaiju: division by zero

[kayobianco]

Description of bug

Hi all,
I have the following problem.

(base) kayobianco@arqueas:~$ multiqc -m kaiju --outdir /home/kayobianco/Documentos/MiSeq_Arqueas_RBD/kaiju --filename kiaju_teste /home/kayobianco/Documentos/MiSeq_Arqueas_RBD/kaiju

  /// MultiQC 🔍 | v1.17

|           multiqc | Only using modules: kaiju
|           multiqc | Search path : /home/kayobianco/Documentos/MiSeq_Arqueas_RBD/kaiju
|         searching | ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 184/184  
|             kaiju | Found 46 reports
╭───────────────── Oops! The 'kaiju' MultiQC module broke... ──────────────────╮
│ Please copy this log and report it at                                        │
│ https://github.com/ewels/MultiQC/issues                                      │
│ Please attach a file that triggers the error. The last file found was:       │
│ /home/kayobianco/Documentos/MiSeq_Arqueas_RBD/kaiju/13_S13_L001_R1_001_kaiju │
│ .out.tsv                                                                     │
│                                                                              │
│ Traceback (most recent call last):                                           │
│   File "/home/kayobianco/miniconda3/lib/python3.8/site-packages/multiqc/mult │
│     output = mod()                                                           │
│   File "/home/kayobianco/miniconda3/lib/python3.8/site-packages/multiqc/modu │
│     self.kaiju_stats_table()                                                 │
│   File "/home/kayobianco/miniconda3/lib/python3.8/site-packages/multiqc/modu │
│     self.kaiju_sample_unclassified[s_name] * 100 / self.kaiju_sample_total_r │
│ ZeroDivisionError: division by zero                                          │
│                                                                              │
╰──────────────────────────────────────────────────────────────────────────────╯
|           multiqc | No analysis results found. Cleaning up..
|           multiqc | MultiQC complete

File that triggers the error

kaiju_teste.zip

MultiQC Error log

No response

Before submitting

• I have read the troubleshooting documentation.
• I am using the latest release of MultiQC.
• I have included a full MultiQC log, not truncated.
• I have attached an input file (.zip if necessary) that triggers the error.

[vladsavelyev]

Thank you @kayobianco for creating the issue,

I added a workaround for this in #2179

Note that your data doesn't seem to reproduce the error for me. The read numbers sum up to a non-zero count, and the module works fine without a division by zero error. So I added a made-up example into MultiQC_TestData: https://github.com/ewels/MultiQC_TestData/pull/303/files, but if you have a real example that triggers the error handy, please add it! Unless I'm misunderstanding something.