Installed Plugin are loading not opening

Hi, everybody. I used OJS version I tried to upload a plugin called “Block Manager Plugin”. Since already installed Block plugin was not working properly, I deleted it to upload a different version. Then I uploaded the new version but after that, the “installed plugins” page was not loaded anymore. Would you please let me know if there is any way to solve the problem? Thank you very much in advance for your responses.

If you have ftp access, delete the “Block Manager Plugin” folder in plugins/generic. The plugins page will work.
You can also manually update the plugin from here.