fixed a bug with hashrate data not getting sent with some miners

tools/web_testbench/_miners.py

@@ -259,6 +259,13 @@ class TestbenchMiner:
                     devs_raw["DEVS"][board]["MHS 5s"] / 1000000, 2
                 )
 
+            if len(hr_data.keys()) < 3:
+                print(devs_raw["DEVS"])
+                for board in [6, 7, 8]:
+                    if f"board_{board}" not in hr_data.keys():
+                        hr_data[f"board_{board}"] = {"HR": 0}
+
+
             # parse fan data
             fans_data = {}
             for fan in range(len(fans_raw["FANS"])):