Vich Bundle - Symfony 4.4 - ApiPlatform - Flysystem - OVH S3 object store - guessMimeType PHP Exception on create and update

Question

• Vich version : 1.15.0
• Symfony version : 4.4.13
• PHP version : 7.4
• API Platform version : 2.5.7
• flysystem-bundle version : 1.5.0