언젠가 부터 apt-get install 부터 apt upgrade 를 진행해도 커널명이 함께뜨는 에러가 자꾸 발생하는데 

아무리 구글링을 해봐도 해결방법이 나오지 않아 답답하네요  혹시 아래와 같은 에러 발생경험이나 해결방법 아시는분 계시면 답글 부탁드립니다. ㅠ 감사합니다. 

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root@controller:~# apt upgrade

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Calculating upgrade... Done

0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

2 not fully installed or removed.

After this operation, 0 B of additional disk space will be used.

Do you want to continue? [Y/n] y\

Setting up linux-image-4.15.0-62-generic (4.15.0-62.69) ...

Setting up linux-image-4.15.0-64-generic (4.15.0-64.73) ...

Processing triggers for linux-image-4.15.0-62-generic (4.15.0-62.69) ...

/etc/kernel/postinst.d/initramfs-tools:

update-initramfs: Generating /boot/initrd.img-4.15.0-62-generic

/etc/kernel/postinst.d/x-grub-legacy-ec2:

Searching for GRUB installation directory ... found: /boot/grub

Searching for default file ... found: /boot/grub/default

Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst

Searching for splash image ... none found, skipping ...

Found kernel: /boot/vmlinuz-4.15.0-20-generic

run-parts: /etc/kernel/postinst.d/x-grub-legacy-ec2 exited with return code 10

dpkg: error processing package linux-image-4.15.0-62-generic (--configure):

 installed linux-image-4.15.0-62-generic package post-installation script subprocess returned error exit status 1

Processing triggers for linux-image-4.15.0-64-generic (4.15.0-64.73) ...

/etc/kernel/postinst.d/initramfs-tools:

update-initramfs: Generating /boot/initrd.img-4.15.0-64-generic

/etc/kernel/postinst.d/x-grub-legacy-ec2:

Searching for GRUB installation directory ... found: /boot/grub

Searching for default file ... found: /boot/grub/default

Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst

Searching for splash image ... none found, skipping ...

Found kernel: /boot/vmlinuz-4.15.0-20-generic

run-parts: /etc/kernel/postinst.d/x-grub-legacy-ec2 exited with return code 10

dpkg: error processing package linux-image-4.15.0-64-generic (--configure):

 installed linux-image-4.15.0-64-generic package post-installation script subprocess returned error exit status 1

Errors were encountered while processing:

 linux-image-4.15.0-62-generic

 linux-image-4.15.0-64-generic

E: Sub-process /usr/bin/dpkg returned an error code (1)

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