Qt5Widgets.dll是qt5的开发组件，你缺少这个可能是环境安装有问题，你运行的软件可能是qt开发。可以尝试安装qt开发环境
看一下这个就知道了https://blog.csdn.net/weixin_43455581/article/details/105903082?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165519862216782390565418%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=165519862216782390565418&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_ecpm_v1~rank_v31_ecpm-15-105903082-null-null.142^v14^pc_search_result_control_group,157^v14^control&utm_term=%E7%94%B1%E4%BA%8E%E6%89%BE%E4%B8%8D%E5%88%B0qt5widgets.dll%2C%E6%97%A0%E6%B3%95%E7%BB%A7%E7%BB%AD%E6%89%A7%E8%A1%8C%E4%BB%A3%E7%A0%81&spm=1018.2226.3001.4187
DLL文件丢失，可以尝试修复一下即可，想了解更多，请关注我。
