Unloading broken assembly Assets/Firebase/Plugins/Mono/Firebase.Database.dll

Hi, i am new to unity. i am currently develop a final year porject using unity, and i decided to use firebase as my databased platform. There is an issue i am facing now, the error said Unloading broken assembly Assets/Firebase/Plugins/Mono/Firebase.Database.dll, this assembly can cause crashes in the runtime. I have no idea how to solve it, can i get any suggestion here? to guide me what to do in case to solve the error. Thank you.