Redirection is not working

I am not able to redirect this is my yml file code

301: 
 /blog/cost-of-ehr-software-in-2023/¸solutions/ehr-software-solutions: /blog/cost-of-ehr-software-in-2023
 /blog/ror-application-development-services-work-for-organizations: /blog/ruby-on-rails-application-development-services
 /blog/meet-langsmith: /blog/artificial-intelligence-meet-langsmith
 /blog/erp-software: /blog/erp-solutions
 /blog/generative-ai-in-banking-finance: /blog/generative-ai-in-banking-and-finance
 /blog/upcoming-rails7-features: /blog/upcoming-rails-7-features
 /blog/tag/future-software-development/: /artificial-intelligence-meet-langsmith/