Y25-006 - [BUG] Exception JSON::GeneratorError occurred in qc_files#create

[harrietc52]

Describe the bug
There is a repeated exception for Limber (prod):

[Psd-exceptions] [Limber PRODUCTION] qc_files#create (JSON::GeneratorError) "source sequence is illegal/malformed utf-8"

A JSON::GeneratorError occurred in qc_files#create:

  source sequence is illegal/malformed utf-8
  app/sequencescape/sequencescape/api/v2/qc_file.rb:13:in `create_for_labware!'

Acceptance Criteria

• Identify the root cause
• Finding and applying a solution
• Document progress + summary in the issue comments

Additional context

• URL : https://limber.psd.sanger.ac.uk/limber_plates/d4861f2e-b2f4-11ef-8fbd-0242e38ee9b0/qc_files
• HTTP Method: POST
• IP address : 172.30.0.198
• Parameters : {"authenticity_token"=>"[FILTERED]", "qc_file"=>#<ActionDispatch::Http::UploadedFile:0x00007f8075be1728 @tempfile=#Tempfile:/tmp/RackMultipart20241212-3092218-ybjkti.csv, @content_type="text/csv", @original_filename="HiC_Batch 103_PCR XP_Norm_12_12_24.csv", @headers="Content-Disposition: form-data; name="qc_file"; filename="HiC_Batch 103_PCR XP_Norm_12_12_24.csv"\r\nContent-Type: text/csv\r\n">, "controller"=>"qc_files", "action"=>"create", "limber_plate_id"=>"d4861f2e-b2f4-11ef-8fbd-0242e38ee9b0"}
• Timestamp : 2024-12-12 13:34:30 +0000
• Server : limb-prod-jammy
  • Rails root : /var/www/limber/releases/20241212130543
• Process: 3092218