key mismatch between miner and valdiator

src/miner.cpp

@@ -1149,7 +1149,7 @@ void static RandomXMiner()
             rxdebug("%s: using initial key, interval=%d, lag=%d, Mining_height=%u\n", randomxInterval, randomxBlockLag, Mining_height);
             // Use the initial key at the start of the chain, until the first key block
             if( (Mining_height) < randomxInterval + randomxBlockLag) {
-                randomx_init_cache(randomxCache, &randomxKey, sizeof randomxKey);
+                randomx_init_cache(randomxCache, randomxKey, strlen(randomxKey));
                 rxdebug("%s: initialized cache with initial key\n");
             } else {
                 rxdebug("%s: calculating keyHeight with randomxInterval=%d\n", randomxInterval);