diff --git a/itests/harmonytask_test.go b/itests/harmonytask_test.go
index b36e9ab11..4985b8421 100644
--- a/itests/harmonytask_test.go
+++ b/itests/harmonytask_test.go
@@ -60,12 +60,12 @@ func (t *task1) TypeDetails() harmonytask.TaskTypeDetails {
 func (t *task1) Adder(add harmonytask.AddTaskFunc) {
 	for _, vTmp := range t.toAdd {
 		v := vTmp
-		add(func(tID harmonytask.TaskID, tx *harmonydb.Tx) bool {
+		add(func(tID harmonytask.TaskID, tx *harmonydb.Tx) (bool, error) {
 			t.myPersonalTableLock.Lock()
 			defer t.myPersonalTableLock.Unlock()
 
 			t.myPersonalTable[tID] = v
-			return true
+			return true, nil
 		})
 	}
 }
@@ -120,10 +120,10 @@ func fooLetterAdder(t *testing.T, cdb *harmonydb.DB) *passthru {
 		adder: func(add harmonytask.AddTaskFunc) {
 			for _, vTmp := range []string{"A", "B"} {
 				v := vTmp
-				add(func(tID harmonytask.TaskID, tx *harmonydb.Tx) bool {
+				add(func(tID harmonytask.TaskID, tx *harmonydb.Tx) (bool, error) {
 					_, err := tx.Exec("INSERT INTO itest_scratch (some_int, content) VALUES ($1,$2)", tID, v)
 					require.NoError(t, err)
-					return true
+					return true, nil
 				})
 			}
 		},
diff --git a/lib/harmony/harmonytask/harmonytask.go b/lib/harmony/harmonytask/harmonytask.go
index cd401f6d2..3296c9f17 100644
--- a/lib/harmony/harmonytask/harmonytask.go
+++ b/lib/harmony/harmonytask/harmonytask.go
@@ -3,13 +3,12 @@ package harmonytask
 import (
 	"context"
 	"fmt"
-	"net/http"
 	"strconv"
 	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/gorilla/mux"
+	"github.com/gin-gonic/gin"
 
 	"github.com/filecoin-project/lotus/lib/harmony/harmonydb"
 	"github.com/filecoin-project/lotus/lib/harmony/resources"
@@ -40,7 +39,7 @@ type TaskTypeDetails struct {
 	// It should also return success if the trigger succeeded.
 	// NOTE: if refatoring tasks, see if your task is
 	// necessary. Ex: Is the sector state correct for your stage to run?
-	Follows map[string]func(TaskID, AddTaskFunc) bool
+	Follows map[string]func(TaskID, AddTaskFunc) (bool, error)
 }
 
 // TaskInterface must be implemented in order to have a task used by harmonytask.
@@ -90,7 +89,7 @@ type TaskInterface interface {
 	Adder(AddTaskFunc)
 }
 
-type AddTaskFunc func(extraInfo func(TaskID, *harmonydb.Tx) bool)
+type AddTaskFunc func(extraInfo func(TaskID, *harmonydb.Tx) (bool, error))
 
 type TaskEngine struct {
 	ctx            context.Context
@@ -107,8 +106,9 @@ type TaskEngine struct {
 	lastCleanup    atomic.Value
 }
 type followStruct struct {
-	f func(TaskID, AddTaskFunc) bool
-	h *taskTypeHandler
+	f    func(TaskID, AddTaskFunc) (bool, error)
+	h    *taskTypeHandler
+	name string
 }
 
 type TaskID int
@@ -153,7 +153,7 @@ func New(
 		}
 
 		for name, fn := range c.TypeDetails().Follows {
-			e.follows[name] = append(e.follows[name], followStruct{fn, &h})
+			e.follows[name] = append(e.follows[name], followStruct{fn, &h, name})
 
 			// populate harmony_task_follows
 			_, err := db.Exec(e.ctx, `INSERT INTO harmony_task_follows (owner_id, from_task, to_task)
@@ -271,7 +271,12 @@ func (e *TaskEngine) followWorkInDB() {
 					continue
 				}
 				// we need to create this task
-				if !src.h.Follows[fromName](TaskID(workAlreadyDone), src.h.AddTask) {
+				b, err := src.h.Follows[fromName](TaskID(workAlreadyDone), src.h.AddTask)
+				if err != nil {
+					log.Errorw("Could not follow: ", "error", err)
+					continue
+				}
+				if !b {
 					// But someone may have beaten us to it.
 					log.Debugf("Unable to add task %s following Task(%d, %s)", src.h.Name, workAlreadyDone, fromName)
 				}
@@ -314,54 +319,54 @@ func (e *TaskEngine) pollerTryAllWork() {
 
 // GetHttpHandlers needs to be used by the http server to register routes.
 // This implements the receiver-side of "follows" and "bumps" the fast way.
-func (e *TaskEngine) GetHttpHandlers() http.Handler {
-	root := mux.NewRouter()
-	s := root.PathPrefix("/scheduler")
-	f := s.PathPrefix("/follows")
-	b := s.PathPrefix("/bump")
+func (e *TaskEngine) ApplyHttpHandlers(root gin.IRouter) {
+	s := root.Group("/scheduler")
+	f := s.Group("/follows")
+	b := s.Group("/bump")
 	for name, vsTmp := range e.follows {
 		vs := vsTmp
-		f.Path("/" + name + "/{tID}").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			tIDString := mux.Vars(r)["tID"]
+		f.GET("/"+name+"/:tID", func(c *gin.Context) {
+			tIDString := c.Param("tID")
 			tID, err := strconv.Atoi(tIDString)
 			if err != nil {
-				w.WriteHeader(401)
-				fmt.Fprint(w, err.Error())
+				c.JSON(401, map[string]any{"error": err.Error()})
 				return
 			}
 			taskAdded := false
 			for _, vTmp := range vs {
 				v := vTmp
-				taskAdded = taskAdded || v.f(TaskID(tID), v.h.AddTask)
+				b, err := v.f(TaskID(tID), v.h.AddTask)
+				if err != nil {
+					log.Error("Follow attemp failed", "error", err, "from", name, "to", v.name)
+				}
+				taskAdded = taskAdded || b
 			}
 			if taskAdded {
 				e.tryAllWork <- true
-				w.WriteHeader(200)
+				c.Status(200)
 				return
 			}
-			w.WriteHeader(202) // NOTE: 202 for "accepted" but not worked.
+			c.Status(202) // NOTE: 202 for "accepted" but not worked.
 		})
 	}
 	for _, hTmp := range e.handlers {
 		h := hTmp
-		b.Path("/" + h.Name + "/{tID}").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			tIDString := mux.Vars(r)["tID"]
+		b.GET("/"+h.Name+"/:tID", func(c *gin.Context) {
+			tIDString := c.Param("tID")
 			tID, err := strconv.Atoi(tIDString)
 			if err != nil {
-				w.WriteHeader(401)
-				fmt.Fprint(w, err.Error())
+				c.JSON(401, map[string]any{"error": err.Error()})
 				return
 			}
 			// We NEED to block while trying to deliver
 			// this work to ease the network impact.
 			if h.considerWork("bump", []TaskID{TaskID(tID)}) {
-				w.WriteHeader(200)
+				c.Status(200)
 				return
 			}
-			w.WriteHeader(202) // NOTE: 202 for "accepted" but not worked.
+			c.Status(202) // NOTE: 202 for "accepted" but not worked.
 		})
 	}
-	return root
 }
 
 func (e *TaskEngine) bump(taskType string) {
diff --git a/lib/harmony/harmonytask/task_type_handler.go b/lib/harmony/harmonytask/task_type_handler.go
index 932cfc297..af47b498f 100644
--- a/lib/harmony/harmonytask/task_type_handler.go
+++ b/lib/harmony/harmonytask/task_type_handler.go
@@ -3,6 +3,7 @@ package harmonytask
 import (
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
 	"strconv"
@@ -23,15 +24,14 @@ type taskTypeHandler struct {
 	Count      atomic.Int32
 }
 
-func (h *taskTypeHandler) AddTask(extra func(TaskID, *harmonydb.Tx) bool) {
+func (h *taskTypeHandler) AddTask(extra func(TaskID, *harmonydb.Tx) (bool, error)) {
 	var tID TaskID
-	did, err := h.TaskEngine.db.BeginTransaction(h.TaskEngine.ctx, func(tx *harmonydb.Tx) bool {
+	did, err := h.TaskEngine.db.BeginTransaction(h.TaskEngine.ctx, func(tx *harmonydb.Tx) (bool, error) {
 		// create taskID (from DB)
 		_, err := tx.Exec(`INSERT INTO harmony_task (name, added_by, posted_time) 
 			VALUES ($1, $2, CURRENT_TIMESTAMP) `, h.Name, h.TaskEngine.ownerID)
 		if err != nil {
-			log.Error("Could not insert into harmonyTask", err)
-			return false
+			return false, fmt.Errorf("Could not insert into harmonyTask: %w", err)
 		}
 		err = tx.QueryRow("SELECT id FROM harmony_task ORDER BY update_time DESC LIMIT 1").Scan(&tID)
 		if err != nil {
@@ -146,19 +146,18 @@ top:
 func (h *taskTypeHandler) recordCompletion(tID TaskID, workStart time.Time, done bool, doErr error) {
 	workEnd := time.Now()
 
-	cm, err := h.TaskEngine.db.BeginTransaction(h.TaskEngine.ctx, func(tx *harmonydb.Tx) bool {
+	cm, err := h.TaskEngine.db.BeginTransaction(h.TaskEngine.ctx, func(tx *harmonydb.Tx) (bool, error) {
 		var postedTime time.Time
 		err := tx.QueryRow(`SELECT posted_time FROM harmony_task WHERE id=$1`, tID).Scan(&postedTime)
 		if err != nil {
-			log.Error("Could not log completion: ", err)
-			return false
+			return false, fmt.Errorf("Could not log completion: %w ", err)
 		}
 		result := "unspecified error"
 		if done {
 			_, err = tx.Exec("DELETE FROM harmony_task WHERE id=$1", tID)
 			if err != nil {
-				log.Error("Could not log completion: ", err)
-				return false
+
+				return false, fmt.Errorf("Could not log completion: %w", err)
 			}
 			result = ""
 		} else {
@@ -171,8 +170,7 @@ func (h *taskTypeHandler) recordCompletion(tID TaskID, workStart time.Time, done
 				err = tx.QueryRow(`SELECT count(*) FROM harmony_task_history 
 				WHERE task_id=$1 AND result=FALSE`, tID).Scan(&ct)
 				if err != nil {
-					log.Error("Could not read task history:", err)
-					return false
+					return false, fmt.Errorf("Could not read task history: %w", err)
 				}
 				if ct >= h.MaxFailures {
 					deleteTask = true
@@ -181,15 +179,13 @@ func (h *taskTypeHandler) recordCompletion(tID TaskID, workStart time.Time, done
 			if deleteTask {
 				_, err = tx.Exec("DELETE FROM harmony_task WHERE id=$1", tID)
 				if err != nil {
-					log.Error("Could not delete failed job: ", err)
-					return false
+					return false, fmt.Errorf("Could not delete failed job: %w", err)
 				}
 				// Note: Extra Info is left laying around for later review & clean-up
 			} else {
 				_, err := tx.Exec(`UPDATE harmony_task SET owner_id=NULL WHERE id=$1`, tID)
 				if err != nil {
-					log.Error("Could not disown failed task: ", tID, err)
-					return false
+					return false, fmt.Errorf("Could not disown failed task: %v %v", tID, err)
 				}
 			}
 		}
@@ -197,10 +193,9 @@ func (h *taskTypeHandler) recordCompletion(tID TaskID, workStart time.Time, done
 												(task_id, name, posted,    work_start, work_end, result, err)
 			 VALUES ($1, $2, $3, $4, $5, $6, $7)`, tID, h.Name, postedTime, workStart, workEnd, done, result)
 		if err != nil {
-			log.Error("Could not write history: ", err)
-			return false
+			return false, fmt.Errorf("Could not write history: %w", err)
 		}
-		return true
+		return true, nil
 	})
 	if err != nil {
 		log.Error("Could not record transaction: ", err)
@@ -249,7 +244,11 @@ func (h *taskTypeHandler) triggerCompletionListeners(tID TaskID) {
 	inProcessDefs := h.TaskEngine.follows[h.Name]
 	inProcessFollowers := make([]string, len(inProcessDefs))
 	for _, fs := range inProcessDefs {
-		if fs.f(tID, fs.h.AddTask) {
+		b, err := fs.f(tID, fs.h.AddTask)
+		if err != nil {
+			log.Error("Could not follow", "error", err, "from", h.Name, "to", fs.name)
+		}
+		if b {
 			inProcessFollowers = append(inProcessFollowers, fs.h.Name)
 		}
 	}