some fixes

data_acq_and_processing/preprocessing/data_preprocessor/src/data_preprocessor.cpp

@@ -3,6 +3,8 @@
 #include <algorithm>
 #include <chrono>
 #include <cmath>
+#include <cstdint>
+#include <iostream>
 #include <span>
 #include <stdexcept>
 #include <string_view>
@@ -138,13 +140,24 @@ void DataPreprocessor::run(const std::atomic<bool>& stop_requested) {
 
     std::vector<std::uint8_t> serialized_raw{};
     ipc::RawSweepCollection raw_collection{};
+    std::uint64_t error_count = 0;
     while (!stop_requested.load(std::memory_order_relaxed)) {
-        if (!try_pop_raw_collection(serialized_raw, &raw_collection)) {
-            continue;
+        try {
+            if (!try_pop_raw_collection(serialized_raw, &raw_collection)) {
+                continue;
+            }
+            const auto preprocessed_collection = preprocess_collection(raw_collection);
+            publish_preprocessed_collection(preprocessed_collection);
+        } catch (const std::exception& exc) {
+            // A single malformed or transiently-bad collection must not kill the
+            // long-running preprocessor: drop it and keep serving the next sweep.
+            // Logging is throttled so a persistent error cannot flood the log.
+            if (error_count % 100 == 0) {
+                std::cerr << "data_preprocessor: dropped collection after error (count="
+                          << (error_count + 1) << "): " << exc.what() << '\n';
+            }
+            ++error_count;
         }
-
-        const auto preprocessed_collection = preprocess_collection(raw_collection);
-        publish_preprocessed_collection(preprocessed_collection);
     }
 }