artisan optimize crashes with Unable to prepare route in AbstractRouteCollection.php:217

[nagmat84]

Detailed description of the problem [REQUIRED]

./artisan optimize crashes with

$ ./artisan optimize

Configuration cache cleared!

Configuration cached successfully!
Route cache cleared!

In AbstractRouteCollection.php line 217:
                                                                                                                    
  Unable to prepare route [install/env] for serialization. Another route has already been assigned name [install-env].

Steps to reproduce the issue

Install Lychee from master, set up everything, call ./artisan optimize from CLI.

Output of the diagnostics [REQUIRED]

$ ./artisan lychee:diagnostics

Diagnostics
-----------
Warning: Dropbox import not working. dropbox_key is empty.
Warning: You may experience problems when uploading a large amount of photos. Take a look in the FAQ for details.

System Information
------------------
Lychee Version (git):            master (f29922d) - Data not in Cache
DB Version:                      4.3.5

composer install:                --no-dev
APP_ENV:                         production
APP_DEBUG:                       false

System:                          Linux
PHP Version:                     8
Max uploaded file size:          256M
Max post size:                   128M
PostgreSQL Version:              PostgreSQL 12.9 (Ubuntu 12.9-0ubuntu0.20.04.1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, 64-bit

Imagick:                         1
Imagick Active:                  1
Imagick Version:                 1690
GD Version:                      2.3.0

Config Information
------------------
version:                         040305
check_for_updates:               0
sorting_Photos_col:              taken_at
sorting_Photos_order:            ASC
sorting_Albums_col:              max_taken_at
sorting_Albums_order:            DESC
imagick:                         1
skip_duplicates:                 1
small_max_width:                 0
small_max_height:                360
medium_max_width:                1920
medium_max_height:               1080
lang:                            de
layout:                          1
image_overlay_type:              desc
default_license:                 none
compression_quality:             90
full_photo:                      1
delete_imported:                 0
Mod_Frame:                       1
Mod_Frame_refresh:               30
thumb_2x:                        1
small_2x:                        1
medium_2x:                       1
landing_page_enable:             0
landing_owner:
landing_title:
landing_subtitle:
landing_facebook:                
landing_flickr:                  
landing_twitter:                 
landing_instagram:               
landing_youtube:                 
landing_background:              
site_title:
site_copyright_enable:           0
site_copyright_begin:            2019
site_copyright_end:              2069
additional_footer_text:          
display_social_in_gallery:       0
public_search:                   0
SL_enable:                       0
SL_for_admin:                    0
public_recent:                   0
recent_age:                      1
public_starred:                  0
downloadable:                    0
photos_wraparound:               1
map_display:                     1
zip64:                           1
map_display_public:              1
map_provider:                    Wikimedia
force_32bit_ids:                 0
map_include_subalbums:           0
update_check_every_days:         3
has_exiftool:                    1
share_button_visible:            0
import_via_symlink:              0
has_ffmpeg:                      1
location_decoding:               1
location_decoding_timeout:       30
location_show:                   1
location_show_public:            1
rss_enable:                      0
rss_recent_days:                 7
rss_max_items:                   100
prefer_available_xmp_metadata:   0
editor_enabled:                  1
lossless_optimization:           0
swipe_tolerance_x:               150
swipe_tolerance_y:               250
local_takestamp_video_formats:   .avi|.mov
log_max_num_line:                1000
unlock_password_photos_with_url_param: 0
nsfw_visible:                    0
nsfw_blur:                       0
nsfw_warning:                    0
nsfw_warning_admin:              0
map_display_direction:           1
album_subtitle_type:             oldstyle
upload_processing_limit:         4
public_photos_hidden:            1
new_photos_notification:         0

Browser and system

Ubuntu Focal (20.04 LTS) with PHP 8 from PPA ppa:ondrej/php and ppa:ondrej/apache2.