Using the "npm run build" returned an error message

Hi!

I tryied to install the reader using the command "npm run build", but it returned this error message:

0 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'build' ]
1 info using npm@7.5.2
2 info using node@v12.21.0
3 timing config:load:defaults Completed in 5ms
4 timing config:load:file:/usr/share/nodejs/npm/npmrc Completed in 6ms
5 timing config:load:builtin Completed in 6ms
6 timing config:load:cli Completed in 7ms
7 timing config:load:env Completed in 1ms
8 timing config:load:file:/home/tevejonabiblioteca/Downloads/FB3Reader-master/.npmrc Completed in 2ms
9 timing config:load:project Completed in 25ms
10 timing config:load:file:/home/tevejonabiblioteca/.npmrc Completed in 1ms
11 timing config:load:user Completed in 1ms
12 timing config:load:file:/etc/npmrc Completed in 0ms
13 timing config:load:global Completed in 1ms
14 timing config:load:cafile Completed in 2ms
15 timing config:load:validate Completed in 1ms
16 timing config:load:setUserAgent Completed in 2ms
17 timing config:load:setEnvs Completed in 4ms
18 timing config:load Completed in 59ms
19 verbose npm-session 385fe08b6ed7c868
20 timing npm:load Completed in 98ms
21 timing command:run-script Completed in 1576ms
22 verbose stack Error: command failed
22 verbose stack at ChildProcess. (/usr/share/nodejs/@npmcli/promise-spawn/index.js:64:27)
22 verbose stack at ChildProcess.emit (events.js:314:20)
22 verbose stack at maybeClose (internal/child_process.js:1022:16)
22 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:287:5)
23 verbose pkgid fb3reader@1.0.0
24 verbose cwd /home/tevejonabiblioteca/Downloads/FB3Reader-master
25 verbose Linux 5.10.0-8-amd64
26 verbose argv "/usr/bin/node" "/usr/bin/npm" "run" "build"
27 verbose node v12.21.0
28 verbose npm v7.5.2
29 error code 1
30 error path /home/tevejonabiblioteca/Downloads/FB3Reader-master
31 error command failed0 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'build' ]
1 info using npm@7.5.2
2 info using node@v12.21.0
3 timing config:load:defaults Completed in 5ms
4 timing config:load:file:/usr/share/nodejs/npm/npmrc Completed in 6ms
5 timing config:load:builtin Completed in 6ms
6 timing config:load:cli Completed in 7ms
7 timing config:load:env Completed in 1ms
8 timing config:load:file:/home/tevejonabiblioteca/Downloads/FB3Reader-master/.npmrc Completed in 2ms
9 timing config:load:project Completed in 25ms
10 timing config:load:file:/home/tevejonabiblioteca/.npmrc Completed in 1ms
11 timing config:load:user Completed in 1ms
12 timing config:load:file:/etc/npmrc Completed in 0ms
13 timing config:load:global Completed in 1ms
14 timing config:load:cafile Completed in 2ms
15 timing config:load:validate Completed in 1ms
16 timing config:load:setUserAgent Completed in 2ms
17 timing config:load:setEnvs Completed in 4ms
18 timing config:load Completed in 59ms
19 verbose npm-session 385fe08b6ed7c868
20 timing npm:load Completed in 98ms
21 timing command:run-script Completed in 1576ms
22 verbose stack Error: command failed
22 verbose stack at ChildProcess. (/usr/share/nodejs/@npmcli/promise-spawn/index.js:64:27)
22 verbose stack at ChildProcess.emit (events.js:314:20)
22 verbose stack at maybeClose (internal/child_process.js:1022:16)
22 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:287:5)
23 verbose pkgid fb3reader@1.0.0
24 verbose cwd /home/tevejonabiblioteca/Downloads/FB3Reader-master
25 verbose Linux 5.10.0-8-amd64
26 verbose argv "/usr/bin/node" "/usr/bin/npm" "run" "build"
27 verbose node v12.21.0
28 verbose npm v7.5.2
29 error code 1
30 error path /home/tevejonabiblioteca/Downloads/FB3Reader-master
31 error command failed

===

How can I fix this, please?

Alexandre.