Hi, I'm Bhavik. Welcome to JustAnswer. I'm reviewing your question now, and will reply back ASAP.
Can you send me the screenshot of it ? Where you are getting this error message on wordpress?
Okay .Thank you for this image. I got your question. This is specific to the website which you are visiting. Is this is your own website ?
When I tried to open it I got this message .
ok and not you are not able to login to wordpress to delete that plugin ?
Okay .This is quite strange. i will check about it. I will be back in sometime.