Computation of minimum energy paths

Dear friends

When I perform the minimum energy path calculation, no matter which algorithm I adopt, NEB or MEP cannot calculate the convergence. I try many parameters, and the energy is jumping all the time. I also repeatedly consulted the images tutorial and refined the K grid, but it couldn’t converge. I would like to ask if you can provide some suggestions on calculation. First of all, I would like to thank you. Here is my calculation program:

#dia111-7lay-NEB-T4-Br

Electronic configuration

========================

nband 352
kptopt 1
ngkpt 2 2 1
nshiftk 2
shiftk 0.5 0.0 0.0
0.0 0.5 0.0

Convergence parameters

======================

ecut 45

Control of the SCF cycle

========================

diemac 12
iprcel 45
nline 8
toldff 5.0d-5
nstep 50

String controls

===============

nimage 12
imgmov 5
mep_solver 0
neb_algo 2
neb_spring 20.1
cineb_start 7
ntimimage 50
tolimg 0.001
dynimage 0 10
1 0
imgwfstor 1

===========================

ntypat 3
znucl 6 1 29
natom 73
typat 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 2 3
acell 1.4326013000E+01 1.4326013000E+01 4.2197206000E+01 Bohr
angdeg 90.000000 90.000000 120.000000
natfix 18
iatfix 1 4 9 12 17 20 25 28 33 36 41 44 49 52 57 60 65 68