In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/html/axis-cgi/overlay_list.cgi line 29:

	if [ -e $file ]; then

                ^---^ SC2086 (info): Double quote to prevent globbing and word splitting.

Did you mean: 

	if [ -e "$file" ]; then

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/html/axis-cgi/overlay_list.cgi line 31:

		i=$(($i + 1))

                     ^-- SC2004 (style): $/${} is unnecessary on arithmetic variables.

In /logs/firmware/unblob_extracted/firmware_extract/4325012-58052244.squashfs_v4_le_extract/usr/html/axis-cgi/overlay_list.cgi line 43:

		i=$(($i + 1))

                     ^-- SC2004 (style): $/${} is unnecessary on arithmetic variables.

For more information:

  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...

  https://www.shellcheck.net/wiki/SC2004 -- $/${} is unnecessary on arithmeti...