Gblocks does not accept multiple alignment with different sequences length

Question

[ahmed_bio82]

Hi I'm trying to use Gblocks to select conserved blocks from multiple alignments of LSU gene. The application does not accept my data file because the length of the sequences is different. So I'm wondering if there is any way to process my sequences in Gblocks.

[h.mon]

Trim your aligned sequences so all have the same length.