I am not able to open kibana page in web browser.
This issue come after C drive full. then i have delete temporary files to increase space in C drive. and also delete file from C:\ELK IN\elasticsearch-7.14.0\data\nodes to increase drive space. i have restarted services of Elasticsearch, Kibana and Logstash. but still can't open kibana page https://localhost:5601
Chances are you have broken your Elasticsearch installation doing that. You should never delete things from the filesystem, always use the APIs.
You might want to check Elasticsearch is correctly running.