You need to troubleshoot to know the rationale why the error message Epson printer in error state is displayed. There are often various reasons for it. In such scenarios, search the issues given below. you'll fix them with the respective solutions.
1. See whether all the wires getting to a wireless printer like routers and wireless are tight. If not, remove and tighten them up.
2. Dust particles may have moved into the printer or settled on the wires connection. this will also cause errors. Clean with the special solution made for these purposes.