Most probably you did install a corrupt module or a module for an older odoo version. Mostly you can see detailled information in the log entries. At best you can identify the corrupt module by investigating the logs and then you can uninstall it or cancel the install.  Remove the module from the addons folder. After that restart Odoo service. If you are lucky, all is good again. If not, then the easiest is to restore your database backup and next time when you are installing third party modules, do it module by module and always do a backup before.