Vectorization issue Intel compiler

Hello, I'm having problem vectorizing this very simple loop where dolic_c and tke_Lmix are mdspan objects:

for (int jc = start_index; jc <= end_index; jc++)
    tke_Lmix(blockNo, dolic_c(blockNo, jc), jc) = 0.0;

I'm using intel compiler and from the report I get the following output:

   remark #15389: vectorization support: reference dolic_c.__members.__members[blockNo*dolic_c.__members.__members.__members.__members.__members.__members.__members[1]+jc] has unaligned access   [ /home/k/k202136/YAOP/src/backends/CPU/cpu_kernels.hpp(68,38) ]
   remark #15381: vectorization support: unaligned access used inside loop body
   remark #15335: loop was not vectorized: vectorization possible but seems inefficient. Use vector always directive or -vec-threshold0 to override
   remark #15329: vectorization support: irregularly indexed store was emulated for the variable <tke_Lmix.__members.__members[(blockNo*tke_Lmix.__members.__membe>, part of index is read from memory   [ /home/k/k202136/YAOP/src/backends/CPU/cpu_kernels.hpp(68,21) ]
   remark #15305: vectorization support: vector length 4
   remark #15309: vectorization support: normalized vectorization overhead 0.049
   remark #15450: unmasked unaligned unit stride loads: 1
   remark #15463: unmasked indexed (or scatter) stores: 1
   remark #15475: --- begin vector cost summary ---
   remark #15476: scalar cost: 11
   remark #15477: vector cost: 25.750
   remark #15478: estimated potential speedup: 0.420
   remark #15488: --- end vector cost summary ---
   remark #25439: unrolled with remainder by 2

I think that this is simple enough that should be handled by the compiler and I also don't understand the "irregularly indexed store" issue mentioned in the report

Start with the loop reported at cpu_kernels.hpp line 68 and reproduce the Intel compiler vectorization report for the mdspan objects dolic_c and tke_Lmix. Trace their indexing and layout to determine why the store is treated as irregular and whether the behavior comes from mdspan or the compiler; document the finding and any actionable workaround.